Details of the Researcher

PHOTO

Hiroshi Takahashi
Section
Graduate School of Environmental Studies
Job title
Specially Appointed Professor(Research)
Degree
  • 工学博士(東北大学)

Education 2

  • Tohoku University Graduate School, Division of Engineering 資源工学

    - 1986/03/25

  • Tohoku University Graduate School, Division of Engineering 資源工学

    - 1983/03/25

Committee Memberships 46

  • 国土交通省 情報化施工推進会議 委員

    2008/03 - Present

  • 国土交通省 情報化施工推進会議 委員

    2008/03 - Present

  • (社)日本建設機械化協会「学会賞」選考委員会 副委員長

    2007/04 - Present

  • (社)日本建設機械化協会「学会賞」選考委員会 副委員長

    2007/04 - Present

  • 建設施工と建設機械シンポジウム実行委員会 副委員長

    2007/03 - Present

  • 建設施工と建設機械シンポジウム実行委員会 副委員長

    2007/03 - Present

  • 国土交通省東北地方整備局 新技術活用評価委員会 委員

    2006/04 - Present

  • 国土交通省東北地方整備局 新技術活用評価委員会 委員

    2006/04 - Present

  • 国土交通省東北地方整備局 総合評価委員会 委員

    2005/12 - Present

  • 国土交通省東北地方整備局 総合評価委員会機械・電通部会 部会長

    2005/12 - Present

  • 国土交通省東北地方整備局 総合評価委員会 委員

    2005/12 - Present

  • 国土交通省東北地方整備局 総合評価委員会機械・電通部会 部会長

    2005/12 - Present

  • (社)日本建設機械化協会東北支部 技術委員会 委員長

    2004/07 - Present

  • (社)日本建設機械化協会東北支部 技術委員会 委員長

    2004/07 - Present

  • スラリー輸送研究会 幹事

    1995/06 - Present

  • スラリー輸送研究会 幹事

    1995/06 - Present

  • NEDO評価委員会 技術委員

    2010/11 - 2012/03

  • NEDO評価委員会 技術委員

    2010/11 - 2012/03

  • テラメカニックス研究会 会長

    2008/04 - 2011/03

  • テラメカニックス研究会 会長

    2008/04 - 2011/03

  • 資源・素材学会 露天採掘部門委員会 委員長

    2005/04 - 2009/03

  • 資源・素材学会 露天採掘部門委員会 委員長

    2005/04 - 2009/03

  • 日本混相流学会編集委員会 委員長

    2006/08 - 2008/07

  • 日本混相流学会編集委員会 委員長

    2006/08 - 2008/07

  • 日本混相流学会 理事

    2004/08 - 2008/07

  • 日本混相流学会 理事

    2004/08 - 2008/07

  • ロボット等によるIT施工システム研究会」分科会「ロボット施工分科会」 委員

    2004/03 - 2008/03

  • ロボット等によるIT施工システム研究会」分科会「ロボット施工分科会」 委員

    2004/03 - 2008/03

  • テラメカニックス研究会 幹事

    2002/04 - 2008/03

  • テラメカニックス研究会 幹事

    2002/04 - 2008/03

  • 日本混相流学会2006年度混相流フォーラム実行委員会 委員

    2006/08 - 2007/06

  • 日本混相流学会2006年度混相流フォーラム実行委員会 委員

    2006/08 - 2007/06

  • 宮城県ESCO事業導入基本方針策定検討会 座長

    2006/08 - 2007/03

  • 宮城県ESCO事業導入基本方針策定検討会 座長

    2006/08 - 2007/03

  • (社)日本建設機械化協会 施工技術総合研究所 歩道除雪機械の安全性・作業性向上に関する検討会 座長

    2005/12 - 2006/03

  • (社)日本建設機械化協会 施工技術総合研究所 歩道除雪機械の安全性・作業性向上に関する検討会 座長

    2005/12 - 2006/03

  • 日本雪工学会 理事

    2002/04 - 2006/03

  • 日本雪工学会 編集委員長

    2002/04 - 2006/03

  • 日本雪工学会 理事

    2002/04 - 2006/03

  • 日本雪工学会 編集委員長

    2002/04 - 2006/03

  • (財)先端建設技術センター 建設ロボット技術研究委員会 委員長

    2003/10 - 2004/03

  • (財)先端建設技術センター 建設ロボット技術研究委員会 委員長

    2003/10 - 2004/03

  • 日本雪工学会 編集幹事

    1990/04 - 2001/03

  • 日本雪工学会 編集幹事

    1990/04 - 2001/03

  • (社)日本建設機械化協会標準部会国内標準委員会 委員長

    2010/10 -

  • (社)日本建設機械化協会標準部会国内標準委員会 委員長

    2010/10 -

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Professional Memberships 7

  • 砕石研究会

  • 日本実験力学会

  • テラメカニックス研究会

  • 日本素材物性学会

  • 日本混相流学会

  • 土木学会

  • 資源・素材学会

︎Show all ︎Show first 5

Research Interests 4

  • Intelligent

  • Environment

  • Recycling

  • Construction Machinery

Research Areas 5

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Geotechnical engineering /

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Fluid engineering /

  • Informatics / Mechanics and mechatronics /

  • Informatics / Robotics and intelligent systems /

  • Energy / Earth resource engineering, energy science /

Awards 28

  1. 優秀講演賞

    2022/12 計測自動制御学会 バケットおよびブレードによる地盤掘削時の抵抗力を用いた地盤強度推定に関する研究

  2. Best Paper Award

    2022/02 Cooperative International Network for Earth Science and Technology Study on Relationship between Cone Index and Excavating Resistive Force for Excavation acting on Excavator Bucket

  3. 優秀講演賞

    2021/12 計測自動制御学会 バケットおよびブレードによる砂質土地盤の掘削抵抗力とコーン指数との関係

  4. Best Paper Award

    2021/11 Cooperative International Network for Earth Science and Technology Study on Strength Characteristics of Fiber-Cement-Stabilized Soil with Perlite By-Products

  5. 平成27年度建設施工と建設機械シンポジウム優秀論文賞

    2015/12 一般社団法人 日本建設機械施工協会 大水深対応型水中作業ロボットの開発

  6. 第6回ものづくり日本大賞 経済産業大臣賞

    2015/11 経済産業省 泥状津波堆積物(ヘドロ)を原料とした高機能性地盤材料の開発

  7. 2014年日経地球環境技術賞優秀賞

    2014/11/06 日本経済新聞社 木くずを含む津波堆積物の高機能性地盤材料としての再資源化

  8. 第19回リサイクル技術開発本多賞

    2014/10/17 一般社団法人 産業環境管理協会 分級と改良を用いたゴミ混じり津波堆積土砂の再資源化に関する研究

  9. 平成25年度建設施工と建設機械シンポジウム優秀論文賞

    2013/11/14 一般社団法人 日本建設機械施工協会 分級と改良を用いたゴミ混じり津波堆積土砂の再資源化に関する研究

  10. 平成23年度(第38回)環境賞優良賞

    2011/06/08 日立環境財団 繊維質物質を用いた高含水比泥土の再資源化工法の開発

  11. Best Paper Award

    2010/12/08 Cooperative International-Network for Earth Science and Technology, CINEST A Two Dimensional Mechanical Model to Apprehend the Dynamic Response of Shallow Buried Structures due to Direct Impact Loading on the Soil Surface Related to Mechanical Landmine Clearing Operations

  12. 第5回モノづくり連携大賞特別賞

    2010/11 日刊工業新聞 繊維質処理土「ボンテラン」による高含水比泥土の再資源化技術

  13. Best Paper Award

    2009/12/09 Cooperative International-Network for Earth Science and Technology, CINEST Development of DEM Simulation Model for Deformation of Fiber-Cement-Stabilized Soil

  14. 優秀ポスター賞

    2009/11/14 (社)日本建設機械化協会 繊維質固化処理土の変形・強度特性に関する数値シミュレーション

  15. 産官学連携功労者表彰・国土交通大臣賞

    2008/06/14 国土交通省 繊維質固化処理土「ボンテラン」による高含水比泥土の再資源化技術

  16. 資源・素材学会 論文賞

    2008/03/28 (社)資源・素材学会 ペーパースラッジを用いた繊維質固化処理土の強度特性および乾湿繰り返し試験における耐久性に関する実験的研究

  17. 国土技術開発賞入賞

    2007/07/18 (財)国土技術研究センター ボンテラン工法の開発

  18. 工学研究科長教育賞

    2007/03/26 東北大学大学院工学研究科

  19. 平成18年度 新技術情報交換会優秀論文賞

    2006/11/22 (社)日本建設機械化協会東北支部 繊維質固化処理土の可搬性の観点から見た古紙および薬剤の最適添加量について

  20. Best Session Paper Award

    2004/09/16 The International Society for Terrain-Vehicle Systems Geomechatronics-Interaction between Ground and Construction Machinery and its Application to Construction Robotics

  21. 日本素材物性学会山崎賞(論文賞)

    2004/06/15 日本素材物性学会 高含水比泥土の再資源化を目指した軽量繊維質固化処理土の生成に関する研究

  22. 本部会長賞 感謝状

    2003/06/12 社団法人 日本建設機械化協会 東北支部事業活動への貢献

  23. 優秀講演者賞

    2002/12/02 土木学会トンネル工学委員会 ディスクカッタの圧入による岩盤破砕に関する数値シミュレーション

  24. Best Session Paper Award

    2002/10/21 International Society for Terrain-Vehicle Systems Study on the Mechanism of Over Head Type Load Haul Dump with a Vessel

  25. 第23回テラメカニックス研究会優秀ポスター賞

    2002/09/14 テラメカニックス研究会 車体屈曲型車輪式移動車両の自律走行時における横滑りに関する研究

  26. 日本混相流学会奨励賞(Encouragement Prize of Japan Society of Multiphase Flow)

    1995/07 日本混相流学会 (Japan Society of Multiphase Flow) スラリー輸送における理論および実験(Theoretical Study and Experiment of Slurry Transportation)

  27. 資源・素材学会奨励賞 (Encouragement Prize of the Mining and Materials Processing Institute of Japan)

    1995/03 資源・素材学会 (The Mining and Materials Processing Institute of Japan) 資源の流体輸送ならびに開発機械の自動化に関する基礎的研究 (Fundamental Study on Hydraulic Transport of Resources and Automation ofExploitation Machies)

  28. 日本雪工学会第11回全国大会奨励論文賞 (Encouragement Paper Prize of 11th Annual Meeting of Japan Society for SnowEngineering)

    1994/11 日本雪工学会第11回全国大会実行委員会(Japan Society for Snow Engineering) 氷水スラリーの粘度に関する一考察(A Consideration on the Viscosity of Ice-Water Slurries)

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Papers 459

  1. SUPPRESSION OF SWELLING AND DETERIORATION OF FIBER-CEMENT-STABILIZED SOIL CONTAINING SUPER ABSORBENT POLYMER USING FERRIC CHLORIDE

    UENO Kohei, SATOMI Tomoaki, TAKAHASHI Hiroshi

    Japanese Journal of JSCE 79 (7) n/a 2023

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejj.22-00251  

    eISSN: 2436-6021

    More details Close

    A super absorbent polymer has attracted attention as a technology for quick removal of weak disaster soil from the disaster site. While the removed soil should be modified and reused as a ground material by the Fiber-cement stabilized soil method, there is a concern that super absorbent polymer therein deteriorates the durability of the modified soil by absorbing and expanding. In this study, the authors quantified the effect of bonding with ferric ion on the absorption capacity of the super absorbent polymer. Additionally, the durability of the modified soil was verified by a cyclic test for drying and wetting. From the test results, it was confirmed that the super absorbent polymer contained in the modified soil can deteriorate the durability of the soil by absorbing and swelling. Besides, it was clear that the water absorption can be suppressed by bonding with ferric ion to prevent the deterioration of the modified soil.

  2. Study on relationship between cone index of sandy ground and excavating resistive force for excavation acting on the blade Peer-reviewed

    Ryohei SUZUKI, Xiaodong Liu, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2022 1 112-117 2022/12

  3. Fundamental Study on Evaluation of Soil Quality and Water Content for Hand-Guided Sludge Recovery Machine Peer-reviewed

    Riku FUNAKI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2022 1 108-111 2022/12

  4. Study on relationship between cone index and excavating resistive force for excavation acting on excavator bucket Peer-reviewed

    Naoya YAGUCHI, XIAODONG LIU, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2022 1 102-107 2022/12

  5. Effects of agricultural by-product on mechanical properties of cemented waste soil Peer-reviewed

    Nga Thanh Duong, Khiem Quang Tran, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Cleaner Production 365 132814-132814 2022/09

    Publisher: Elsevier BV

    DOI: 10.1016/j.jclepro.2022.132814  

    ISSN: 0959-6526

  6. Study on Mechanical Properties of Modified soil by Geopolymer

    Nguyen Truong Van Loc, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Terramechanics 42 (1) 55-60 2022/06

  7. Soil Deformation by Running of Single Grouser on Soft Sandy Ground

    Terramecanics 42 1-6 2022/05

  8. Study on Mechanical Properties of Cemented Soil Reinforced by Empty Fruit Bunch(EFB) Peer-reviewed

    Delima Canny Valentine Simarmata, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of the Society of Materials Engineering for Resources 25 (1) 109-114 2022/04

  9. Experimental Investigation on Running Resistive Forces and Soil Deformation by Running of Single Grouser on Soft Sandy Ground

    Hiroaki NAKAO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2021 1 71-76 2021/11

  10. Study on Mechanical Properties of Cemented Soil Reinforced by Empty Fruit Bunch (EFB)

    Delima Canny Valentine Simarmata, Tomoaki Satomi, Hiroshi Takahashi

    Proc. of International Symposium on Earth Science and Technology 2021 1 65-70 2021/11

  11. Study on the Mechanical Properties of Fiber-Cement-Stabilized Soil Using Waste Gypsum Board Paper

    Yu SATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2021 1 61-64 2021/11

  12. Effect of the Additive Amount of Perlite By-products on Strength Characteristic of Fiber-Cement-Stabilized Soil Peer-reviewed

    Hina OMURO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 16th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 143-148 2021/11

  13. Study on Recycling of Reservoir Bottom Sludge as Banking Materials Peer-reviewed

    Rina KASAI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 16th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 137-142 2021/11

  14. Experimental Investigation on Effect of Bucket Angle on Excavating Resistive Forces for Crushed Rocks under Bucket Excavation Peer-reviewed

    Kanna KAJ, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 16th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 131-136 2021/11

  15. Performance Evaluation of Soil Sampling Mechanism with Screw Auger Peer-reviewed

    Masahide ISHIDA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 16th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 126-130 2021/11

  16. Study on Estimation of Optimum Mixing Conditions for Fiber-cement-stabilized Soil by Regression Tree Peer-reviewed

    Moeka KUSE, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 16th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 121-125 2021/11

  17. Study on the Strength Characteristics and Long-Term Stability of Fiber-Cement-Stabilized Soil using Waste Gypsum Board Paper

    Yu SATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Full Abstracts of 9th International Conference on Materials Engineering for Resources Paper B-4 2021/10

  18. Study on Cement Stabilized Soil Method by Empty Fruit Bunch Fibers to Landslide Sludge Recycling

    Delima Canny Valentine, SIMARMATA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Full Abstracts of 9th International Conference on Materials Engineering for Resources Paper B-3 2021/10

  19. Study on Stability of Slope Covered by Modified Landslide Sludge Peer-reviewed

    Delima Canny Valentine, SIMARMATA, Thomas Teguh WIJAYA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Advanced Experimental Mechanics 6 104-109 2021/08

  20. Experimental Investigation on Flow Suppression and Modification of High Water Content Soil UsingWater Absorbent Polymer and Fiber Cement Stabilization Peer-reviewed

    Kohei UENO, Kazumi RYUO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Advanced Experimental Mechanics 6 99-103 2021/08

  21. 吸水材添加による高含水泥土の流動性低減と再利用性に関する研究

    上野 耕平, 里見知昭, 高橋 弘

    テラメカニックス 41 17-22 2021/06

  22. スクリュー式土砂サンプリング機構の試作およびその性能評価

    石田真英, 里見知昭, 高橋 弘

    テラメカニックス 41 7-12 2021/06

  23. 掘削バケットによる土の掘削抵抗力および地盤強度に及ぼす礫の影響

    塩田浩平, 里見知昭, 高橋 弘

    テラメカニックス 41 1-6 2021/06

  24. Potential of corn husk fiber for reinforcing cemented soil with high water content

    Nga Thanh Duong, Tomoaki Satomi, Hiroshi Takahashi

    Construction and Building Materials 271 2021/02/15

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.conbuildmat.2020.121848  

    ISSN: 0950-0618

  25. Study on the Compressive and Tensile Strength Behaviors of Corn Husk Fiber-Cement Stabilized Soil

    Nga Thanh Duong, Tomoaki Satomi, Hiroshi Takahashi

    Advances in Intelligent Systems and Computing 1284 492-503 2021

    Publisher: Springer Science and Business Media Deutschland GmbH

    DOI: 10.1007/978-3-030-62324-1_42  

    ISSN: 2194-5365 2194-5357

  26. Fundamental Study for Estimating Shear Strength Parameters of Fiber-Cement-Stabilized Soil by Using Paper Debris

    Kazumi Ryuo, Tomoaki Satomi, Hiroshi Takahashi

    Advances in Intelligent Systems and Computing 1284 479-491 2021

    Publisher: Springer Science and Business Media Deutschland GmbH

    DOI: 10.1007/978-3-030-62324-1_41  

    ISSN: 2194-5365 2194-5357

  27. Study on Stability of Slope Covered by Modified Landslide Sludge Peer-reviewed

    Delima Canny Valentine Simarmata, Thomas Teguh Wijaya, Tomoaki Satomi, Hiroshi Takahashi

    Proc. of International Symposium on Earth Science and Technology 2020 1 227-232 2020/11

  28. Study on Strength Characteristics of Fiber-Cement-Stabilized Soil with Perlite By-products Peer-reviewed

    Hina OMURO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2020 1 20-23 2020/11

  29. Study on Recycling of Bottom Sludge of Reservoir as Banking Materials Peer-reviewed

    Rina KASAI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2020 1 17-19 2020/11

  30. Study on Excavating Resistive Forces for Crushed Rocks under Bucket Excavation Peer-reviewed

    Kanna KAJI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2020 1 11-16 2020/11

  31. Study on Estimation of Optimum Mixing Conditions for Fiber-cement-stabilized Soil by Multilayer Neural Network Peer-reviewed

    Moeka KUSE, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2020 1 5-10 2020/11

  32. Temperature: A key parameter on soil content reduction simulation in recycled asphalt aggregate Peer-reviewed

    Milkos Borges Cabrera, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Cleaner Production 261 121236-121236 2020/07

    Publisher: Elsevier BV

    DOI: 10.1016/j.jclepro.2020.121236  

    ISSN: 0959-6526

  33. 掘削溝形状と掘削抵抗力,掘削土質量に関する実験的考察

    湊 智晴, 里見知昭, 高橋 弘

    テラメカニックス 40 31-36 2020/06

  34. 軟弱泥土のバケット掘削における抵抗力と地盤強度に関する研究

    高橋裕介, 里見知昭, 高橋 弘

    テラメカニックス 40 25-30 2020/06

  35. 平刃での掘削における飽和度と水深が与える影響の評価に関する研究

    小林健太, 里見知昭, 高橋 弘

    テラメカニックス 40 19-24 2020/06

  36. A statistical study on the effect of water content, temperature and clay in soil reduction activity when processing contaminated recycled asphalt aggregate with screenless separation equipment with a vibration device

    Milkos Borges Cabrera, Tomoaki Satomi, Hiroshi Takahashi

    Road Materials and Pavement Design 21 (3) 821-834 2020/04/02

    Publisher: Taylor and Francis Ltd.

    DOI: 10.1080/14680629.2018.1511457  

    ISSN: 2164-7402 1468-0629

  37. Influence of initial water, moisture, and geopolymer content on geopolymer modified sludge

    Minh Chien Vu, Tomoaki Satomi, Hiroshi Takahashi

    Construction and Building Materials 235 2020/02/28

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.conbuildmat.2019.117420  

    ISSN: 0950-0618

  38. Experimental Investigation of Effect of Gravel Content on Soil Failure Process and Excavating Force during Soil Excavation by Bucket Peer-reviewed

    Kohei SHIOTA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2019 1 250-254 2019/12

  39. Study on soft soil reinforcement by liquefied stabilized soil method using paper sludge ash-based geopolymer Peer-reviewed

    Minh Chien Vu, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2019 1 2019/12

  40. Experimental Evaluation of Shear Strength Parameters of Fiber-Cement-Stabilized Soil Peer-reviewed

    Kazumi RYUO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2019 1 238-243 2019/12

  41. Fundamental Study on Recycling of Returned Concrete as Ground Materials: Strength Properties of Modified Soils Produced from Returned Concrete Peer-reviewed

    Ryota ICHINOHE, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2019 1 233-342 2019/12

  42. Study on Predicting the Ground Strength in Disaster Sites by Falling Cone from UAV Peer-reviewed

    Kyousuke SUNEYA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 14th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 2019/11

  43. Study on Workability and Strength Properties of Fiber-Liquefied Stabilization Soil Peer-reviewed

    Isao KIMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 14th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 2019/11

  44. Study on Strength Properties of Fiber-Liquefied Stabilization Soil Produced by Using Corn Husk Fiber Peer-reviewed

    DUONG Thanh Nga, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 14th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 2019/11

  45. Study on Acquisition of Ground Information for Effective Bucket Excavation : Measurement of Ground Shape after the Excavation and Resitive Force

    Tomoharu MINATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proceedings of the 3rd Joint Seminar on Landslide, Flood Disasters and the Environmental Issues 1 2019/10

  46. Experimental Investigation on The Effect of Ratio of Saturation and Water Depth on Resistive Forces with Flat Blade

    kenta KOBAYASHI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proceedings of the 3rd Joint Seminar on Landslide, Flood Disasters and the Environmental Issues 1 2019/10

  47. Study on Predicting the Ground Strength in Disaster Sites by Falling Cone from UAV

    Kyousuke SUNEYA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2020 1 2019/10

  48. Study on Workability and Strength Properties of Placing Type Fiber-Cement-Stabilized Soil

    Isao KIMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proceedings of the 3rd Joint Seminar on Landslide, Flood Disasters and the Environmental Issues 1 2019/10

  49. Mechanical Behavior Comparison of Cemented Sludge Reinforced by Waste Material and Several Crop Residues Peer-reviewed

    Thanh Nga DUONG, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Advanced Experimental Mechanics 4 186-191 2019/09

  50. Tensile behaviors of natural fiber and cement reinforced soil subjected to direct tensile test Peer-reviewed

    Khiem Quang Tran, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Building Engineering 24 100748-100748 2019/07

    Publisher: Elsevier BV

    DOI: 10.1016/j.jobe.2019.100748  

    ISSN: 2352-7102

  51. 軟弱泥土のバケット掘削における抵抗力と地盤強度に関する研究

    高橋 裕介, 里見 知昭, 高橋 弘

    テラメカニックス 39 117-122 2019/06

  52. 繊維質固化処理土の強度定数に関する研究

    高橋 弘, 窪田 春香, 松島 昂汰, 里見 知昭

    テラメカニックス 39 95-98 2019/06

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  53. Influence of industrial by-products and waste paper sludge ash on properties of recycled aggregate concrete

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Cleaner Production 214 403-418 2019/03/20

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.jclepro.2018.12.325  

    ISSN: 0959-6526

  54. Properties of geopolymer modified sludge generated in landslide area designed by Taguchi method Peer-reviewed

    Minh Chien Vu, Tomoaki Satomi, Hiroshi Takahashi

    Lecture Notes in Civil Engineering 1 685-690 2019

    Publisher: Springer Singapore

    DOI: 10.1007/978-981-15-0802-8_108  

    ISSN: 2366-2557

    eISSN: 2366-2565

  55. Effect of mineral admixtures on properties of recycled aggregate concrete at high temperature

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    Construction and Building Materials 184 361-373 2018/09/30

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.conbuildmat.2018.06.237  

    ISSN: 0950-0618

  56. Effect of waste cornsilk fiber reinforcement on mechanical properties of soft soils

    Khiem Quang Tran, Tomoaki Satomi, Hiroshi Takahashi

    Transportation Geotechnics 16 76-84 2018/09/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.trgeo.2018.07.003  

    ISSN: 2214-3912

  57. Recycling woven plastic sack waste and PET bottle waste as fiber in recycled aggregate concrete: An experimental study Peer-reviewed

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    Waste Management 78 79-93 2018/08/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.wasman.2018.05.035  

    ISSN: 1879-2456 0956-053X

  58. Improvement of mechanical behavior of cemented soil reinforced with waste cornsilk fibers Peer-reviewed

    Khiem Quang Tran, Tomoaki Satomi, Hiroshi Takahashi

    Construction and Building Materials 178 204-210 2018/07/30

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.conbuildmat.2018.05.104  

    ISSN: 0950-0618

  59. Mechanical properties of concrete containing 100% treated coarse recycled concrete aggregate Peer-reviewed

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    Construction and Building Materials 163 496-507 2018/02/28

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.conbuildmat.2017.12.131  

    ISSN: 0950-0618

  60. Study on strength characteristics of rice straw fiber-cement-reinforced sludge

    Phan Thanh Chien, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of the Society of Material Engineering for Resources 23 (2) 147-151 2018

    Publisher: Society of Materials Engineering for Resources of Japan

    DOI: 10.5188/ijsmer.23.147  

    ISSN: 1884-6629 1347-9725

  61. Statistics analysis on soil reduction activity in grizzly-under-materials discharged from recycling plant of waste asphalt blocks

    Milkos Borges Cabrera, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of the Society of Material Engineering for Resources 23 (2) 209-214 2018

    Publisher: Society of Materials Engineering for Resources of Japan

    DOI: 10.5188/ijsmer.23.209  

    ISSN: 1884-6629 1347-9725

  62. Study on weak soil improvement by using geopolymer and paper fragments

    Minh Chien Vu, Tomoaki Satomi, Hiroshi Takahashi, Anh Tuan Le

    International Journal of the Society of Material Engineering for Resources 23 (2) 203-208 2018

    Publisher: Society of Materials Engineering for Resources of Japan

    DOI: 10.5188/ijsmer.23.203  

    ISSN: 1884-6629 1347-9725

  63. Enhancement of recycled aggregate concrete properties by a new treatment method Peer-reviewed

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of GEOMATE 14 (41) 68-76 2018

    Publisher: GEOMATE International Society

    DOI: 10.21660/2018.41.11484  

    ISSN: 2186-2982

  64. コンクリート用粗骨材作製のための砕石脱水ケーキの溶融温度推定モデルの提案 Peer-reviewed

    里見知昭, 一瀬裕司, 高橋弘

    土木学会論文集E2 74 (1) 21-34 2018/01

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejmcs.74.21  

    eISSN: 2185-6567

    More details Close

    In Japan, dehydrated cake discharged from crushed stone quarry is still disposed. To make it possible to recycle a large amount of dehydrated cake, we focused on a high temperature heating production method for recycling construction waste as concrete aggregates, we have been produced coarse aggregates for concrete by using dehydrated cake discharged from crushed stone quarry and investigated their performances. However, to produce dehydrated cake coarse aggregates, we had decided appropriate heating conditions, i.e., temperature and time of dehydrated cake granulated materials through high temperature heating test with different heating conditions. By the trial and error method, since the kinds of dehydrated cake differ depending on the kinds of crushed stone, working efficiency to produce dehydrated cake coarse aggregates decreases.<br> To improve the working efficiency, the objective of this study is to develop an estimation model of heat melting temperature (temperature keeping time: 30 min) of dehydrated cake discharged from crushed stone quarry based on its chemical composition by x-ray fluorescence analysis (XRF). First of all, several kinds of dehydrated cake discharged from crushed stone quarry in the Tohoku region were used and the range of heating temperature and heating time to produce dehydrated cake granulated materials were indicated through high temperature heating test. Next, the performances of melted granulated materials were evaluated and strength properties of concrete using the melted ones was measured. As a result, it was clear that the melted granulated materials can be used as coarse aggregates for concrete. Finally, based on the above results, estimation model of heat melting temperature of dehydrated cake discharged from crushed stone quarry was developed by using neural network back propagation. It was found that the estimated all results were good agreement with the measurement ones.

  65. Study on Recycling Method of Waste Gypsum Board Paper: Application of Waste Gypsum Board Paper for Soil Improvement Peer-reviewed

    Yusuke IMAMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2017/11/02

  66. A Study on Development of Planting Soil by Recycling High-Water Content Mud Peer-reviewed

    Shimpei OSHIMA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2017/11/02

  67. Study on Fluorine Insolubilization of Paper Sludge Ash by Using Bone Char for Soil Improvement Peer-reviewed

    Tatsuru SAKURAI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2017/11/02

  68. Development on Constant Low Pressure Direct Box Shear Test Apparatus and Measurement of Shear Strength of Soil Peer-reviewed

    Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2017/11/02

  69. The Application of Fly Ash from Thermal Power Plant on Geopolymer Materials Invited Peer-reviewed

    Anh Tuan LE, Tan Khoa NGUYEN, Hiroshi TAKAHASHI

    Proc. of the 8th International COnference on Materials for Resources 1 50-53 2017/10/25

  70. Study on strength characteristics of sludge reinforced by rice straw fiber and cement Peer-reviewed

    Phan Thanh CHIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 8th International COnference on Materials for Resources 1 290-294 2017/10/25

  71. Study on Weak Soil Improvement by Using Geopolymer and Paper Fragments Peer-reviewed

    Vu Minh CHIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI, Le Anh Tuan

    Proc. of the 8th International COnference on Materials for Resources 1 295-300 2017/10/25

  72. Study on Reducing the Soil Content in Grizzly-under-Materials Discharged from Recycling Plant of Waste Asphalt Blocks Peer-reviewed

    Milkos Borges, CABRERA Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 8th International COnference on Materials for Resources 1 301-306 2017/10/25

  73. Study on Effect of Corn Silk Fiber in Soil Stabilization Peer-reviewed

    TRAN QUANG KHIEM, TOMOAKI SATOMI, HIROSHI TAKAHASHI

    Proceedings of the 4th Congrès International de Géotechnique - Ouvrages -Structures 1 571-579 2017/10/25

    DOI: 10.1007/978-981-10-6713-6_56  

  74. Study on Strength of Modified Sludge Produced By Fiber-Cement Stabilized Soil Method Using Several Kinds of Fiber Materials Peer-reviewed

    DUONG THANH NGA, TOMOAKI SATOMI, HIROSHI TAKAHASHI

    Proceedings of the 4th Congrès International de Géotechnique - Ouvrages -Structures 1 580-587 2017/10/25

    DOI: 10.1007/978-981-10-6713-6_57  

  75. STUDY ON STRENGTH AND DURABILITY CHARACTERISTICS OF SLUDGE REINFORCED BY RICE STRAW FIBER AND CEMENT

    Phan Thanh Chien, Tomoaki Satomi, Hiroshi Takahashi

    Proc. of the 1st Joint Seminar on Landslide, Flood Disasters and the Environmental Issues S3-1-1-S3-1-11 2017/09/21

  76. Study on Reducing the Soil Content in Grizzly-under-Materials Discharged from Recycling Plant

    Milkos Borges CABRERA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 1st Joint Seminar on Landslide, Flood Disasters and the Environmental Issues 1 S3-2-1-S3-2-12 2017/09/21

  77. Improvement of mechanical properties of recycled aggregate concrete basing on a new combination method between recycled aggregate and natural aggregate Peer-reviewed

    Ngoc Kien Bui, Tomoaki Satomi, Hiroshi Takahashi

    CONSTRUCTION AND BUILDING MATERIALS 148 (1) 376-385 2017/09

    DOI: 10.1016/j.conbuildmat.2017.05.084  

    ISSN: 0950-0618

    eISSN: 1879-0526

  78. Study on Sludge Recycling with Compaction Type and Placing Type by Rice Husk-Cement-Stabilized Soil Method Peer-reviewed

    Phan Thanh Chien, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Advanced Experimental Mechanics 2 159-167 2017/08/01

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/aem.2.0_159  

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    <p>As the results of dredging activities, a huge amount of sludge has been generated. And one of recycling methods for the sludge has been developed by using paper debris and cement. This is called "Fiber-cement-stabilized soils method" (FCSS). The modified-sludge produced by this method has several features such as high failure strength, high failure strain, and high durability. However, it is almost difficult to apply this method directly for the dredged sludge in Mekong delta, because it is hard to obtain a large amount of paper debris. By the way, a large amount of agricultural wastes are discharged, especially in the case of rice husk in Mekong delta. If the rice husk (RH) can be used instead of paper debris, it will be possible to recycle the dredged sludge in Mekong delta by FCSS. Moreover, FCSS is generally carried out by compaction method. However, compaction method cannot be used in some constructions such as backfilling. In these cases, placing method is generally used and one of recycling methods that applied placing type is Liquefied-Stabilized Soil Method (LSS). In this method, high flowability and low bleeding rate materials are made by adding the cement and water with excavated soil. LSS is possible to simplify construction sequence because LSS flows like concrete mortal and compaction is not necessary. However, LSS method showed some disadvantages such as low durability for drying and wetting conditions. In this study, several specimens were made by using rice husk with FCSS and LSS, and unconfined compression tests were carried out. It was confirmed that rice husk can be used as a substitute of paper debris in FCSS and LSS. Furthermore, empirical equations were obtained as a function of initial water content of the sludge to estimate the optimum additive amount of rice husk and cement for both compaction and placing types.</p>

  79. Study on Effect of Chemical Composition of Geopolymer to Improve Sludge by Using Fiber Materials Peer-reviewed

    Vu Minh Chien, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Advanced Experimental Mechanics 2 168-173 2017/08/01

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/aem.2.0_168  

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    <p>Geopolymer, an environmentally friendly alternative to ordinary Portland cement, is currently receiving increased attention in academic and industrial communities for its ability to produce fly ash based geopolymer material in several applications. Geopolymer material is known as an inorganic-polymer composite and is synthesized by the aluminosilicate compound materials with alkali hydroxide and alkali silicate. Current researches on geopolymer are mainly focused on geopolymer concrete properties such as mechanical properties, paste properties and durability properties in laboratory. However, few specific publications are available concerning the feasibility of geopolymer modified soft soil (sludge) in the actual landslide area which is mainly due to earthquake and heavy rainfall. This paper presents the details of studies carried out on strength of sludge improved with various geopolymer contents. The composition of sludge is 60% silt, 40% clay and water content is 70%. Sodium hydroxide (NaOH) 12 Molar and sodium silicate solution (Na2SiO3) were prepared. The test specimens were made of 50 x 100 mm cylindrical mold and 20oC temperature curing condition. By adding paper debris, the specimens were made immediately after mixing by compaction, in contrast without adding paper debris, after 24 hours the specimens were made with same conditions to compare. Compressive strength after 12 and 18 hours was measured. The results showed that the modified soil with paper satisfied the target (125kN/m2) with geopolymer content nearly 9% after 12 hours and all of them obtained enough strength after 18 hours. Moreover, modified soil without paper reached target after 12 and 18 hours but revealed lower strain performance.</p>

  80. A progress of Slurry Transport Study and Future Prospect on Solid-Liquid Flow Study Invited

    高橋 弘

    Japanese Journal of Multiphase Flow 31 (2) 130-134 2017/06/15

    Publisher: THE JAPANESE SOCIETY FOR MULTIPHASE FLOW

    DOI: 10.3811/jjmf.31.130  

    ISSN: 0914-2843

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    <p>A progress of slurry transport is described in this report. In around 1980, slurry transport was extensively studied. Papers on pressure losses of slurry flows, transition velocity, measurement of in-situ concentration, snow/ice-water slurry flows were published by several researchers. Recently, the study on slurry transport is not so active, but solid-liquid flows can be seen in many fields. It is anticipated that studies on solid-liquid flows in the fields of disaster site restoration and next-generation resources and energy development will be progressed.</p>

  81. Fundamental Study on Automatic Soil Sampling at Disaster Areas

    上戸 宙, 里見 知昭, 高橋 弘

    テラメカニックス (37) 33-36 2017/05/01

  82. Fundamental Study on Development of Continous Mud Recycing Machine Performed Fiber-Cement-Stabilized Soil Method

    大島 慎平, 里見 知昭, 高橋 弘

    テラメカニックス (37) 37-42 2017/05/01

  83. Fundamental Study on Development of Seabed Excavating Machine --- On Soil-Sinkage Property of Vehicel under Water --- Peer-reviewed

    島貫 寛生, 里見 知昭, 高橋 弘

    テラメカニックス (37) 43-48 2017/05/01

  84. Study on Effect of Grain Size of Crushed Rocks by Excavator Bucket Peer-reviewed

    大澤 拓也, 里見 知昭, 高橋 弘

    テラメカニックス (37) 89-94 2017/05/01

  85. Development on Constant-Pressure Direct Box Shear Test Apparatus to Estimate Soil Strength Parameters from Bucket Excavating Force Peer-reviewed

    里見 知昭, 高橋 弘

    テラメカニックス (37) 95-100 2017/05/01

  86. Study on recycling of waste asphalt blocks containing roadbed materials using new screenless separation equipment with a vibration device Peer-reviewed

    Milkos Borges Cabrera, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of Pavement Research and Technology 10 (3) 228-244 2017/05/01

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.ijprt.2017.01.006  

    ISSN: 1997-1400 1996-6814

  87. 固化材による泥土改良と改良土の強度・耐久性測定

    高橋 弘

    Journal of Japanese Society for Experimental Mechanics 17 (1) 57-60 2017/04/12

  88. Study on Development of New Fiber-Geopolymer-Stabilized Soil Method to Improve the Sludge Generated in the Disaster Sites

    Vu Minh Chien, Tomoaki Satomi, Hiroshi Takahashi, Le Anh Tuan

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-10 2017/03/10

  89. Study on Improvement of High Water Content Sludge by using Paper Sludge Ash

    Tatsuru SAKURAI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-6 2017/03/10

  90. Study on Recycling of High Water Content Sludge as Banking Materials

    Kazuya OGATA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-3-1-S3-3-9 2017/03/10

  91. Study on Strength Characteristics of Fiber-Cement-Srabilized Soils Containing Granulated Materials Made of Rubbles

    Kota MATSUSHIMA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-4-1-S3-4-11 2017/03/10

  92. Properties of Recycled Aggregate Concrete after Treated with Pozzolanic Material under Uniaxial and Triaxial Stress

    Bui Ngoc Kien, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-5-1-S3-5-11 2017/03/10

  93. Study on Strength Characteristics of Sludge Reinforced by Rice Straw Fiber and Cement in Mekong Delta

    Phan Thanh CHIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 7th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-6-1-S3-6-7 2017/03/10

  94. Study on strength behavior of cement stabilized sludge reinforced with waste cornsilk fiber Peer-reviewed

    Khiem Quang Tran, Tomoaki Satomi, Hiroshi Takahashi

    International Journal of GEOMATE 13 (39) 140-147 2017

    Publisher: GEOMATE International Society

    DOI: 10.21660/2017.39.28994  

    ISSN: 2186-2982

  95. An Experimental Study on Biodegradability of Cellulose Fiber by Fiber-Cement-Stabilized Soil Method Peer-reviewed

    森 勇人, 高橋 弘, 加来 伸夫, 西村 宏之

    Journal of MMIJ 132 (12) 182-189 2016/12/15

    DOI: 10.2473/journalofmmij.132.182  

  96. Improvement of Recycled Aggregate Concrete Properties by Coating Pozzolanic Solutions Materials Peer-reviewed

    BUI Ngoc Kien, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2016 1 67-73 2016/12/08

  97. Experimental Evaluation on Strength Properties of Placing Type Fiber-Cement-Stabilized Soil Peer-reviewed

    Subaru TACHIHANA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2016 1 79-84 2016/12/08

  98. Study on Sludge Reinforcement with Placing type Fiber-Cement-Stabilized Soil Method by using Raw Rice Husk Peer-reviewed

    Phan Thanh CHIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2016/11/01

  99. Study on Application of Geopolymer for Fiber-Cement-Stabilizes Soil Method to Improve the Sludge Generated in the Disaster Sites Peer-reviewed

    Vu Minh Chien, Le Anh Tuan, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2016/11/01

  100. Study on Production of Spherical Aggregates using Dehydrated Cake Discharged from Various Crushed Stone Quarries Peer-reviewed

    Yuji ICHINOSE, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2016/11/01

  101. A Study on Characteristics of Soil Adhesion to Material Surface Peer-reviewed

    Kohei MASUDA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2016/11/01

  102. Study on Effect of Gravel Content on Resistive Forces Acting on the Bucket in Soil Excavation Works Peer-reviewed

    Riki ICHIMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 USB 2016/11/01

  103. Introdction to On-site Demonstrations of Next-generation Robotic Technologies for Social Infrastructures, Organized by Advisory Committee on Disaster Investigation Invited

    高橋 弘

    Journal of the Robotic Society of Japan 34 (8) 196-201 2016/10/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.34.515  

    ISSN: 0289-1824

  104. Study on Recycling of Tsunami Sludge Deposited on the Bottom of Rivers as Banking Materials Peer-reviewed

    Hiroshi TAKAHASHI, Masanori SATO, Tomoaki SATOMI

    Advanced Experimental Mechanics 1 196-201 2016/09/01

  105. Study on Effect of Gravel Content on Resistive Forces of Soil Excavation

    市村 力, 里見 知昭, 高橋 弘

    Terramechanics 1 33-36 2016/05/01

  106. Neutral Neywork Model to Estimate Soil Strength Parameters from Bucket Excavating Force

    里見 知昭, 高橋 弘

    Terramechanics 1 37-42 2016/05/01

  107. A Study on Characteristics of Soiul Adhesion to Material Surface Peer-reviewed

    増田 幸平, 里見 知昭, 高橋 弘

    Terramechanics 1 49-54 2016/05/01

  108. Study on Recycling of Tsunami Sludge in the River as Banking Materials

    Masanori SATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 6th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-11 2016/03/11

  109. Study on Development of Placing Type Fiber-Cement-Stabilized Soil Method and Evaluation of Strength Properties of Modified Soil

    Subaru TACHIHANA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 6th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-8 2016/03/11

  110. Study on Sludge Improvement by using Rica Husk

    Phan Thanh CHIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 6th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-3-1-S3-3-13 2016/03/11

  111. Study on New Conbination Method for Replacing Recycled Concrete Aggregate in Concrete

    Bui Ngoc KIEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 6th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-4-1-S3-4-15 2016/03/11

  112. Study on Recycling of Waste Asphalt Blocks Containing Roadbed Materials Using a New Screenless Separation Equipment with a Vibrating Device Dealing with Grizzlu under Materials Containing 3% and 5% Water Content Peer-reviewed

    Milkos Borges CABRERA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2015 1 195-200 2015/12/03

  113. 大水深対応型水中作業ロボットの開発 Peer-reviewed

    小川 和樹, 泉 信也, 高橋 弘

    平成27年度建設施工と建設機械シンポジウム論文集 1 49-54 2015/12/01

  114. 無機系特殊固化剤を用いた建設汚泥処理技術の開発

    大野 康年, 泉 信也, 高橋 弘

    Construction Machinery and Equipment 51 (10) 45-49 2015/10/01

    Publisher:

    ISSN: 0385-9878

  115. 砕石場脱水ケーキと繊維屑を混合して作製した緑化基盤材の性能評価 Peer-reviewed

    里見 知昭, 高橋 弘

    骨材資源 47 (186) 75-85 2015/10/01

    Publisher:

    ISSN: 0286-9179

  116. Setting of Optimum Conditions for Creating Fiber-Cement-Stabilized Soil by Recycing Tsunami Sludge Peer-reviewed

    里見 知昭, 高橋 弘

    Journal of Japanese Society for Experimental Mechanics(JSEM) 15 (3) 225-230 2015/09/29

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/jjsem.15.225  

    ISSN: 1346-4930

    More details Close

    On March 11, 2011, a very big earthquake occurred in the Tohoku district in Japan. As a result, a large amount of tsunami sludge was generated and radiation contamination due to Fukushima nuclear disaster also became a serious problem. Therefore, it became necessary to be stored the radioactive pollutant at temporary storehouses after the decontamination of the radiation-contaminated waste and soil. However, the embankment made of ordinary soils had low strength property due to rainfall and low quake-resistant ability; the rainwater seepage control sheets were also affected by the ultraviolet light. Therefore, further improvements on these solutions were required. In this study, we focused on the application of Fiber-cement-stabilized soil method to the cover soil for radiation-contaminated soil. Moreover, the setting method of optimum conditions for creating Fiber-cement-stabilized soil made of tsunami sludge was developed based on the compaction characteristics of the tsunami sludge. The advantage of the developed method was validated by laboratory soil test. As a result, the developed method was useful for easily-setting the optimum condition for creating the Fiber-cement-stabilized soil by recycling the tsunami sludge.

  117. Development of Deep Sea Crawler Type Robot Peer-reviewed

    泉 信也, 飯田 宏, 津久井慎吾, 大村誠司, 高橋 弘

    建設ロボットシンポジウム論文集 1 CD-ROM 2015/09/07

    More details Close

    論文番号O-51

  118. Development of Deep Sea Crawler Type Robot Peer-reviewed

    泉 信也, 飯田 宏, 津久井慎吾, 大村 誠司, 高橋 弘

    Proceedings of the 25th Ocean Engineering Symposium 1 CD-ROM 2015/08/06

    More details Close

    論文番号OES25-100

  119. Trial and Actual Construction on Creation of Artificial Ground by Recycling Tsunami Sludge Invited

    高橋 弘

    Journal of the Japan Institute of Energy 94 (5) 396-402 2015/05/20

    Publisher: The Japan Institute of Energy

    ISSN: 0916-8753

    More details Close

    The mass of tsunami sludge generated by The Great East Japan Earthquake was huge and it is impossible to discard tsunami sludge in the final disposal site. That is, tsunami sludge should be recycled effectively as much as possible. The author has been carried out the trial construction to recycle the tsunami sludge by applying Fiber-Cement-Stabilized Soil method and to create the quake-resistant ground materials. This trial construction was carried out by opening to public. Through this trial construction, the advantages of Fiber-Cement-Stabilized Soil method were evaluated by the ordering party, and the actual construction was conducted in Tagajo city, Miyagi prefecture. In this paper, the details of trial and actual construction conducted were described.

  120. Study on Estimation of Foundation Strength during Digging Operation by Hydraulic Excavator

    山﨑 凌一郎, 里見 知昭, 高橋 弘

    Terramechanics 35 (35) 7-12 2015/04/23

    Publisher:

    ISSN: 1345-644X

  121. Turning Performance of Wheel-Typed Vehicle with Crawler between Front and Rear Wheels on Soft Ground

    江藤 亮輔, 里見 知昭, 高橋 弘

    Terramechanics 35 (35) 13-18 2015/04/23

    Publisher:

    ISSN: 1345-644X

  122. A Consideration on Performance of Planting Soil Obtained by Mixing Dehydrated Cake Generated at Crushed Stone Site with Fiber Waste

    里見 知昭, 高橋 弘

    Terramechanics 35 (35) 35-40 2015/04/23

    Publisher:

    ISSN: 1345-644X

  123. Study on Dredging of Tsunami Sludge in the River and Recycing of Tsunami Sludge as Banking Materials

    佐藤 政則, 里見 知昭, 高橋 弘

    Terramechanics 35 (35) 41-44 2015/04/23

    Publisher:

    ISSN: 1345-644X

  124. Fundamental on Development of Seabed Excavation Machine - Evaluation of Underwater Soil Shear Strength Property in Water -

    諫田 貴哉, 里見 知昭, 高橋 弘, 小川 和樹

    Terramechanics 35 (35) 45-49 2015/04/23

    Publisher:

    ISSN: 1345-644X

  125. Study on Dredging of Tsunami Skudge in the River and Recycing of Tsunami Sludge as Banking Materials

    Masanori SATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 5th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-7 2015/03/13

  126. tudy on Recycling of Tsunami Sludge Containing Wood Wastes as High-Functional Ground Materials --- A method to Restrain H2S Generation ---

    Chaocheng Liu, Mei-Fang Chien, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 5th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-11 2015/03/13

  127. Numerical Model for Mixing Soil with Liquid based on Smoothed Particle Hydrodynamics (SPH) Method

    Kousuke NAKAMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of International Symposium on Earth Science and Technology 2014 1 181-186 2014/12/05

  128. Improved Model for Soil as a Two-Phase Mixture Based on Smoothed Particle Hydrodynamics(SPH) Peer-reviewed

    Kousuke Nakamura, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Applied Mathematics and Physics 2 (12) 1053-1060 2014/12/01

    DOI: 10.4236/jamp.2014.212120  

  129. Experimental Investigation of Optimum Condition of Development of Continuous Recycling Machine of High-Water Content Mud Generated From Disaster Sites Peer-reviewed

    Chiaki KUJI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 9th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2014/11/02

  130. Development on Measurement device of Shear Strength Parameters of Subsurface Layers Peer-reviewed

    Yuki SATO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 9th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2014/11/02

  131. Study on Estimation of Foundation Strength during Digging Operation by Hydraulic Excavator Peer-reviewed

    Ryoichiro YAMAZAKI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 9th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2014/11/02

  132. Study on Optimum Conditions for Creating Fiber-Cement Stabilized Soil Made of Tsunami Sludge Peer-reviewed

    Tomoaki SATOMI, Hiroki KURIBARA, Hiroshi TAKAHASHI

    Proc. of the 9th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2014/11/02

  133. Field Survey of Sediment Disasters due to Heavy Rainfall in Yamagata and Niigata Prefuctures in 2013 Peer-reviewed

    里見 知昭, 佐藤 優樹, 高橋 弘

    Proc. of the 7th Symposium on Sediment-Related Disasters 1 91-96 2014/09/26

  134. Actual Construction on Dredging and Recycling of Tsunami Sludge Generated by Great East Japan Earthquake Peer-reviewed

    高橋 弘, 里見 知昭, 柴田 聡, 森 雅人

    Proc. of the 7th Symposium on Sediment-Related Disasters 1 229-234 2014/09/26

  135. A Study on Estimation of Soil Strength Characteristics by using Resistive Force Acting on Bucket Peer-reviewed

    Min CHEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Journal of JCMA(Japan Construction Machine Association) 66 (9) 82-89 2014/09/25

    Publisher:

    ISSN: 2187-851X

  136. Analysis on Movement of Wheel-Typed Vehicle with Crawlers in between Front and Rear Wheels on Soft Ground Peer-reviewed

    Ryosuke ETO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Journal of Japanese Society for Experimental Mechanics 14 (Special Issue) s297-s302 2014/08/01

    DOI: 10.11395/jjsem.14.s297  

  137. Evaluation of Failure Strength Property and Permeability of Fiber-Cement-Stabilized Soil Made of Tsunami Sludge Peer-reviewed

    Tomoaki SATOMI, Hiroki KURIBARA, Hiroshi TAKAHASHI

    Journal of Japanese Society for Experimental Mechanics 14 (Special Issue) s303-s308 2014/08/01

    DOI: 10.11395/jjsem.14.s303  

  138. Study on Durability for Drying and Wetting of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge Peer-reviewed

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI

    Journal of Japanese Society for Experimental Mechanics 14 (Special Issue) s309-s313 2014/08/01

    DOI: 10.11395/jjsem.14.s309  

  139. Experimental Investigation and Numerical Simulation using Smoothed Particle Hydrodynamics for Water Absorption into Soil Peer-reviewed

    Kousuke NAKAMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Journal of Japanese Society for Experimental Mechanics 14 (Special Issue) s314-s319 2014/08/01

    DOI: 10.11395/jjsem.14.s314  

  140. Investigation on Effect of Soil Strength Characteristics on Excavating by Narrow Blade Peer-reviewed

    Tomoaki SATOMI, Kosuke ASAI, Hiroshi TAKAHASHI

    Journal of Japanese Society for Experimental Mechanics 14 (Special Issue) s320-s324 2014/08/01

    DOI: 10.11395/jjsem.14.s320  

  141. Traveling Performance of Wheeled Vehicle with Crawler between Front and Rear Wheels on Soft Ground

    江藤 亮輔, 里見 知昭, 高橋 弘

    Terramechanics 34 13-18 2014/04/30

    Publisher:

    ISSN: 1345-644X

  142. Fundamnetal Study on Development of Continuous Recycling Machine of High-Water Content Mud Generated from Disaster Sites

    高橋 弘, 久慈 千晶, 里見 知昭

    Terramechanics 34 41-45 2014/04/30

    Publisher:

    ISSN: 1345-644X

  143. A Consideration on Relationship between Characteristics of Soil Adhesion to Solid and Solid Surface Shape

    里見 知昭, 二瓶 晴哉, 高橋 弘

    Terramechanics 34 65-70 2014/04/30

    Publisher:

    ISSN: 1345-644X

  144. STUDY ON COVER SOIL FOR RADIATION-CONTAMINATED SOIL BY PLACING TYPE FIBER-CEMENT-STABILIZED SOIL

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI

    Proc. of the 4th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-19 2014/03/12

  145. FUNDAMENTAL STUDY ON DEVELOPMENT OF CONTINUOUS RECYCLING MACHINE OF HIGH-WATER CONTENT MUD GENERATED FROM DISASTER SITES

    Hiroshi TAKAHASHI, Chiaki KUJI, Tomoaki SATOMI

    Proc. of the 4th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-8 2014/03/12

  146. EXPERIMENTAL EVALUATION OF OPTIMUM MAKING CONDITIONS FOR FIBER-CEMENT-STABILIZED SOIL MADE OF TSUNAMI SLUDGE

    Tomoaki SATOMI, Hiroki KURIBARA, Hiroshi TAKAHASHI

    Proc. of the 4th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-3-1-S3-3-8 2014/03/12

  147. PEFORMANCE EVALUATION OF WHEELED VEHICLE WITH CRAWLERS BETWEEN FRONT AND REAR WHEELS ON SOFT GROUND

    Ryosuke ETO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 4th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-4-1-S3-4-8 2014/03/12

  148. STUDY ON DURABILITY FOR EROSION BY RAINFALL OF COVER SOIL FOR RADIATION-CONTAMINATED SOIL MADE OF TSUNAMI SLUDGE : A CONSIDERRATION FOR PLACING TYPE FIBER-CEMENT-STABILIZED SOILS

    Hiroshi TAKAHASHI, Shota KUMAGAI, Tomoaki SATOMI

    Proc. of the 4th Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-5-1-S3-5-9 2014/03/12

  149. 分級と改良を用いたゴミ混じり津波堆積土砂の再資源化に関する試験施工

    高橋 弘, 泉 信也, 柴田 聡

    Journal of Japan Construction Machinery and Construction Association 66 (2) 83-88 2014/02/25

    Publisher:

    ISSN: 2187-851X

  150. Performance of wheel-typed vehicle with crawlers in between front and rear wheels on soft ground

    Ryosuke Eto, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Robotics and Mechatronics 26 (2) 261-8 2014

    Publisher: Fuji Technology Press

    DOI: 10.20965/jrm.2014.p0261  

    ISSN: 1883-8049 0915-3942

  151. Study on Durability for Erosion of Cover Soil Made of Tsunami Sludge for Radiation-Contaminated Soil Peer-reviewed

    Hiroshi TAKAHASHI, Shota KUMAGAI, Tomoaki SATOMI

    Journal of JSEM(Japanese Society for Experimental Mechanics) 13 (4) 339-345 2013/12/28

    Publisher:

    DOI: 10.11395/jjsem.13.339  

    ISSN: 1346-4930

  152. Outdoor Test on Durability for Soil Erosion and Seepage Behavior due to Rainfall of Fiber-Cement-Stabilized Soil Made of Tsunami Sludge Peer-reviewed

    Tomoaki SATOMI, Yusuke SHIRAI, Ryoichiro YAMAZAKI, Hiroshi TAKAHASHI

    Journal of JSEM(Japanese Society for Experimental Mechanics) 13 (4) 346-352 2013/12/28

    Publisher:

    DOI: 10.11395/jjsem.13.346  

    ISSN: 1346-4930

  153. EXPERIMENTAL STUDY ON DURABILITY OF COVER SOIL FOR RADIATION-CONTAMINATED SOIL MADE OF TSUNAMI SLUDGE AGAINST EROSION BY RAINFALL Peer-reviewed

    Tomoaki SATOMI, Ryoichiro YAMAZAKI, Hiroshi TAKAHASHI

    J of JSCE 1 (1) 530-539 2013/12/27

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/journalofjsce.1.1_530  

    ISSN: 2187-5103

    More details Close

    On March 11, 2011, a very big earthquake occurred in the Tohoku district in Japan. As a result, a large amount of tsunami sludge was generated and radiation contamination due to the nuclear power plant disaster also became a serious problem. To ensure the safety of living environments, it became necessary to decontaminate the radiation-contaminated waste and soil, and for the radioactive pollutant to be stored at temporary storehouses. However, because ordinary cover soil or sheets deteriorate under rainfall or ultraviolet light, further improvement of this system was required. This study focused on the "Fiber-cement-stabilized soil method". This method is a new recycling method for high water content mud such as construction sludge by using paper debris and cement. Thus, if the cover soil for radiation-contaminated soil could be produced from the tsunami sludge, we could make effective use of the tsunami sludge and store the radiation-contaminated soil securely. The cover soil requires high failure strength, high durability for drying and wetting, high durability for erosion by rainfall and low permeability. To evaluate the durability of the cover soil made of tsunami sludge against erosion by rainfall, the indoor artificial rainfall test and the outdoor test under natural rainfall were carried out. As a result, it was confirmed that the durability of Fiber-cement-stabilized soil against erosion by rainfall was very high.

  154. Recycling of Trash Mixture Tsunami Sludge by using Screening and Improvement Peer-reviewed

    Hiroshi TAKAHASHI, Shinya IZUMI, Satoshi SHIBATA, Masato MORI

    Proc. of International Symposium on Earth Science and Technology 2013 1 59-63 2013/12/03

  155. 分級と改良を用いたゴミ混じり津波堆積土砂の再資源化に関する試験施工 Peer-reviewed

    高橋 弘, 泉 信也, 柴田 聡

    平成25年度建設施工と建設機械シンポジウム論文集 1 9-14 2013/11/13

  156. A study on Relationship between Soil Strength Properties and Resistive Forces Acting on Excavating Construction Machine Peer-reviewed

    Min CHEN, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  157. Analysis on Movement of Wheel-Typed Vehicle with Crawlers in between Front and Rear Wheels on Soft Ground Peer-reviewed

    Ryosuke ETO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  158. Experimental Investigation and Numerical Simulation using Smoothed Particle Hydrodynamics for Water Absorption into Soil Peer-reviewed

    Kousuke NAKAMURA, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  159. Study on Durability for Erosion by Rainfall of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge : A Consideration from the Results of Jet Erosion Test Peer-reviewed

    Hiroshi TAKAHASHI, Shota KUMAGAI, Tomoaki SATOMI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 (1) CD-ROM-539 2013/11/03

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/journalofjsce.1.1_530  

    ISSN: 2187-5103

    More details Close

    On March 11, 2011, a very big earthquake occurred in the Tohoku district in Japan. As a result, a large amount of tsunami sludge was generated and radiation contamination due to the nuclear power plant disaster also became a serious problem. To ensure the safety of living environments, it became necessary to decontaminate the radiation-contaminated waste and soil, and for the radioactive pollutant to be stored at temporary storehouses. However, because ordinary cover soil or sheets deteriorate under rainfall or ultraviolet light, further improvement of this system was required. This study focused on the "Fiber-cement-stabilized soil method". This method is a new recycling method for high water content mud such as construction sludge by using paper debris and cement. Thus, if the cover soil for radiation-contaminated soil could be produced from the tsunami sludge, we could make effective use of the tsunami sludge and store the radiation-contaminated soil securely. The cover soil requires high failure strength, high durability for drying and wetting, high durability for erosion by rainfall and low permeability. To evaluate the durability of the cover soil made of tsunami sludge against erosion by rainfall, the indoor artificial rainfall test and the outdoor test under natural rainfall were carried out. As a result, it was confirmed that the durability of Fiber-cement-stabilized soil against erosion by rainfall was very high.

  160. Study on Durability for Drying and Wetting of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge Peer-reviewed

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

    DOI: 10.2208/journalofjsce.1.1_530  

  161. Detection of Obstacle in Disaster Relief Work of Slope Failure by Natural Hazard Peer-reviewed

    Hiroshi TAKAHASHI, Takuma NAKAMURA, Tomoaki SATOMI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  162. Experimental Consideration on Relationship between Failure Strength Property and Permeability of Fiber-Cement-Stabilized Soil Made of Tsunami Sludge Peer-reviewed

    Tomoaki SATOMI, Hiroki KURIBARA, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  163. Investigation on Effect of Soil Strength Characteristics on Excavating by Narrow Blade Peer-reviewed

    Tomoaki SATOMI, Kosuke ASAI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  164. Study on Characteristics of Soil Adhesion to Cuticles of Insects Peer-reviewed

    Tomoaki SATOMI, Chiaki KUJI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  165. A Consideration on Characteristics of Soil Adhesion to Metal Surface under Various Soil Conditions Peer-reviewed

    Tomoaki SATOMI, Haruya NIHEI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  166. Study on Estimation Method of Shear Strength Parameters of Subsurface Layers Peer-reviewed

    Tomoaki SATOMI, Yuki SATO, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 CD-ROM 2013/11/03

  167. Study on Durability for Erosion by Rainfall of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge Peer-reviewed

    Tomoaki SATOMI, Ryoichiro YAMAZAKI, Hiroshi TAKAHASHI

    Proc. of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics, 2013 1 (1) CD-ROM-539 2013/11/03

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/journalofjsce.1.1_530  

    ISSN: 2187-5103

    More details Close

    On March 11, 2011, a very big earthquake occurred in the Tohoku district in Japan. As a result, a large amount of tsunami sludge was generated and radiation contamination due to the nuclear power plant disaster also became a serious problem. To ensure the safety of living environments, it became necessary to decontaminate the radiation-contaminated waste and soil, and for the radioactive pollutant to be stored at temporary storehouses. However, because ordinary cover soil or sheets deteriorate under rainfall or ultraviolet light, further improvement of this system was required. This study focused on the "Fiber-cement-stabilized soil method". This method is a new recycling method for high water content mud such as construction sludge by using paper debris and cement. Thus, if the cover soil for radiation-contaminated soil could be produced from the tsunami sludge, we could make effective use of the tsunami sludge and store the radiation-contaminated soil securely. The cover soil requires high failure strength, high durability for drying and wetting, high durability for erosion by rainfall and low permeability. To evaluate the durability of the cover soil made of tsunami sludge against erosion by rainfall, the indoor artificial rainfall test and the outdoor test under natural rainfall were carried out. As a result, it was confirmed that the durability of Fiber-cement-stabilized soil against erosion by rainfall was very high.

  168. Study on Development of Continuous Recycling Machine of High-Water Content Mud Generated from the Disaster Sites Peer-reviewed

    Chiaki KUJI, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of 13th Conference on Science and Technology - Civil Engineering Session 1 195-199 2013/10/31

  169. 分級と改良の融合による排泥土の再資源化

    高橋 弘

    月刊推進技術 27 (10) 19-23 2013/10

  170. Development of Ground Materials and Cover Soils by Recycling Waste Woods and Tsunami Sludge Peer-reviewed

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI

    Journal of JSEM(Japanese Society for Experimental Mechanics 13 (Special Issue) s108-s113 2013/09

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/jjsem.13.s108  

    ISSN: 1346-4930

    More details Close

    On March 11 in 2011, a very big earthquake occurred in Tohoku district in Japan. Huge tsunami was generated by this earthquake. Many houses were destroyed by tsunami and a large amount of rubble was generated. At the same time, a large amount of tsunami sludge deposited on land. If the high quality ground materials and cover soils can be produced from waste woods and tsunami sludge, it can be considered that the restoration and reconstruction in the disaster areas will progress greatly. In this study, the mixtures of wood chips and tsunami sludge were modified by Fiber-cement-stabilized soil method, and the strength characteristics of modified soils were experimentally investigated. Furthermore, durability for drying and wetting were investigated in order to use the modified soils as cover soils for radiological contaminated excavated soils in Fukushima Prefecture. It was found through the experiments that modified soils have enough failure strength, failure strain and durability for drying and wetting, and can be used as ground materials or cover soils.

  171. Recycling of Tsunami Sludge and Creation of Artificail Ground in Natori City, Miyagi Prefecture

    Hiroshi TAKAHASHI, Tomoaki SATOMI, Satoshi SHIBATA, Masato MORI

    Proc. of JSEM 2013 Annual Conference on Experimental Mechanics (13) 211-215 2013/08

    Publisher:

    ISSN: 1346-4922

  172. Outdoor test on Soil Erosion and Seepage of Fiber-Cement-Stabilized Soil Made of Tsunami Sludge

    Tomoaki SATOMI, Ryoichirou YAMAZAKI, Hiroshi TAKAHASHI

    Proc. of JSEM 2013 Annual Conference on Experimental Mechanics (13) 216-221 2013/08

    Publisher:

    ISSN: 1346-4922

  173. Effect of Drillpipe Rotation on Cuttings Transport during Horizontal Foam Drilling Invited Peer-reviewed

    Amna Gumati, Hiroshi Takahashi, Ausama A. Giwelli

    JOURNAL OF THE JAPAN PETROLEUM INSTITUTE 56 (4) 230-235 2013/07

    DOI: 10.1627/jpi.56.230  

    ISSN: 1346-8804

  174. Modeling of Wheel-Type Vehicle with Crawlers between Front and Rear Wheels on Soft Ground Peer-reviewed

    Ryosuke ETO, Tomoaki SATOMI, Hiroshi TAKAHASHI

    Proc. of World Academy of Science, Engineering and Technology 78 2013 1 1697-1702 2013/06/20

  175. 中間に履帯機構を有する車輪式移動車両の走行について

    江藤 亮輔, 里見 知昭, 高橋 弘

    建設機械 49 (6) 51-58 2013/06/01

    Publisher:

    ISSN: 0385-9878

  176. Study on Durability for Erosion of Cover Soil Made of Tsunami Sludge for Radiation-Contaminated Soil

    高橋 弘, 熊谷 翔太, 里見 知昭

    Terramechanics 33 (33) 13-18 2013/04/11

    Publisher:

    ISSN: 1345-644X

  177. Relationship between Durability for Erosion and Strength Characteristics of Cover Soil Made of Tsunami Sludge for Radiation-Contaminated Soil

    高橋 弘, 栗原 弘樹, 里見 知昭

    Terramechanics 33 (33) 19-23 2013/04/11

    Publisher:

    ISSN: 1345-644X

  178. Relationship between Permeability and Strength Properties of Cover Soil for Radiation-Contaminated Soil made of Tsunami Sludge

    里見 知昭, 栗原 弘樹, 高橋 弘

    Terramechnics 33 (33) 25-30 2013/04/11

    Publisher:

    ISSN: 1345-644X

  179. Study on Movement of Wheel-Typed Vehicle with Crawler between Front and Rear Wheels on Soft Ground

    江藤 亮輔, 里見 知昭, 高橋 弘

    Terramechnics 33 (33) 43-48 2013/04/11

    Publisher:

    ISSN: 1345-644X

  180. A study on Relationship between Soil Strength Properties and Resistive Forces acting on Excavating Construction Machine

    陳 敏, 里見 知昭, 高橋 弘

    Terramechanics 33 (33) 49-52 2013/04/11

    Publisher:

    ISSN: 1345-644X

  181. Study on Curving Mechanism of Small Diameter Drilling Machine Without Didcharging Excavated Soils

    遠藤 弘伸, 里見 知昭, 高橋 弘

    Terramechnics 33 (33) 53-58 2013/04/11

    Publisher:

    ISSN: 1345-644X

  182. Investigation on Effect of Soils Strength Characteristics on Excavating Force and Validity Evaluation of Conventional Models

    浅井 康介, 里見 知昭, 高橋 弘

    Terramechnics 33 (33) 59-62 2013/04/11

    Publisher:

    ISSN: 1345-644X

  183. Modeling the Dynamic Interaction of Tool - Shallow Buried Structure due to Surface Impact Loading

    Nuhansyah SULAIMAN, Hiroshi TAKAHASHI

    Terramechnics 33 (33) 75-80 2013/04/11

    Publisher:

    ISSN: 1345-644X

  184. 軟弱泥土を高機能性地盤材料に再資源化-ボンテラン工法の原理と特徴-

    高橋 弘

    建設の施工企画 (757) 50-55 2013/03/20

    Publisher:

    ISSN: 1349-547X

  185. Study on Durability for Erosion by Rainfall of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge : A Consideration from the results of Jet Erosion Test

    H.Takahashi, S.Kumagai, T.Satomi

    Proc. of the 3nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-11 2013/03/14

  186. Study on Durability for Drying and Wetting of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge

    H.Takahashi, H.Kuribara, T.Satomi

    Proc. of the 3nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-7 2013/03/14

  187. Study on Permeability of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge

    T.Satomi, H.Kuribara, H.Takahashi

    Proc. of the 3nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-3-1-S3-3-9 2013/03/14

  188. Study on Durability for Erosion by Rainfall of Cover Soil for Radiation-Contaminated Soil Made of Tsunami Sludge : A Consideration from the results of Rainfall Experiment

    T.Satomi, R.Yamazaki, H.Takahashi

    Proc. of the 3nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-4-1-S3-4-12 2013/03/14

  189. 津波堆積物の再資源化による人工地盤造成-宮城県名取市における施工事例-

    高橋 弘

    建設の施工企画 (755) 67-71 2013/01/25

    Publisher:

    ISSN: 1349-547X

  190. ボンテラン工法による津波堆積物の再資源化-岩手県大船渡市における施工事例-

    Hiroshi TAKAHASHI

    Construction Machinery and Equipment 48 (12) 7-11 2012/12/01

    Publisher:

    ISSN: 0385-9878

  191. タイ王国における繊維質固化処理土工法のデモ報告

    高橋 弘

    Journal of MMIJ 128 (12) 640-644 2012/12/01

  192. Development of Ground Materials by Recycling the Wasted Wood and Tsunami Sludge Peer-reviewed

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI, Masato MORI

    Proc. of the 7th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 Paper B104, USB 2012/11/09

  193. 個別要素法を用いたモービルクラッシャによるコンクリート塊の破砕性能評価 Peer-reviewed

    里見知昭, 山藤佑樹, 高橋 弘

    応用力学論文集(土木学会論文集A2) 15 (2) 455-466 2012/09

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejam.68.I_455  

    eISSN: 2185-4661

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    Recently, on-site recycling method used mobile crusher has been receiving considerable attention. As the function of the mobile crusher is to crush the concrete blocks and to use the fragments as the aggregates at the construction sites, the machine needs to have an ability to crush the concrete blocks to the target particle sizes. However, many parameters of the machine such as the discharge width and rotation number affect the crushing performance. So the effect of these parameters on the crushing performance is not cleared. In this paper, the simulation model by using Distinct Element Method (DEM) to predict the crushing performance of the mobile crusher was developed, and then the effect of several parameters on the crushing performance was analyzed by using Principal Component Analysis (PCA), which is one of multivariate analysis technique.

  194. Development of Ground Material by Recycling Wasted Wood and Tsunami Sludge Generated in the Great East Japan Earthquake Peer-reviewed

    Hiroshi TAKAHASHI, Hiroki KURIBARA, Tomoaki SATOMI

    Proceedings of the 6th Symposium on Sediment-Related Diasters 1 1-6 2012/08/23

  195. Creation of Artificial Ground by Recycling Tsunami Sludge Peer-reviewed

    Hiroshi TAKAHASHI, Tomoaki SATOMI, Masato MORI

    Proceedings of the 6th Symposium on Sediment-Related Diasters 1 7-12 2012/08/23

  196. Creation of Artificial Ground by Recycling Tsunami Sludge

    Hiroshi TAKAHASHI, Masato MORI

    Japanese Journal of Multiphase Flow 26 (2) 133-142 2012/06/15

    DOI: 10.3811/jjmf.26.133  

  197. 繊維質固化処理土工法による津波堆積物の再資源化

    Hiroshi TAKAHASHI

    Construction Machinery and Equipment 48 (6) 41-50 2012/06/01

    Publisher:

    ISSN: 0385-9878

  198. Study on Movement of Wheel-Typed Vehicle with Crawler between Front and Rear Wheels

    R.Eto, T.Satomi, H.Takahashi

    Terramechanics 32 (32) 37-42 2012/05/23

    Publisher:

    ISSN: 1345-644X

  199. Creation of Artificial Ground by Recycing Tsumani Sludge -- Construction at Kesennuma City --

    H.Takahashi

    Terramechanics (32) 79-83 2012/05/23

  200. Exploratory Report on Damage of the 2011 Off the Pacific Coast of Tohoku Earthquake

    T.Satomi, H.Takahashi

    Terramechanics 32 (32) 101-111 2012/05/23

    Publisher:

    ISSN: 1345-644X

  201. Study on Durability for Erosion of Fiber-Cement-Stabilized Soils

    H.Takahashi, S.Kumagai, T.Satomi

    Proc. of the 2nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-1-1-S3-1-9 2012/03/13

  202. Development of Ground Material by Recycling the Wasted Wood and Tsunami Sludge Generated in the Great East Japan Earthquake

    H.Takahashi, H.Kuribara, T.Satomi

    Proc. of the 2nd Vietnam/Japan Joint Seminar on Geohazards and Environmental Issues 1 S3-2-1-S3-2-7 2012/03/13

  203. Recycling of Tsunami Sludge by Fiber-Cement-Stabilized Soil Method and Creation of Artificial Ground

    Takahashi Hiroshi, Kuribara Hiroki, Satomi Tomoaki, Mori Masato

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 23 181-181 2012

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.14912/jsmcwm.23.0_181  

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    Tsunami sludge was improved by Fiber-cement-stabilized soil method which we developed to increase the recycling rate of construction sludge, and high functional ground materials were made. By using the modified soils, an construction to create the artificial ground was carried out. It was confirmed through the construction that creation of artificial ground was possible even if a large amount of wasted wood chips was included in Tsunami sludge. Furthermore, a fundamental study to use modified soils as cover soils for radiological contaminated soils was carried out. In this study, low permeability as one of the functions for which the cover soils are required. In result, necessary conditions to satisfy the target value for permeability were made clear.

  204. Critical Tractive Velocity and Deposition of Sponge Media in Fluidized-bed Biofilm Reactor Peer-reviewed

    Mitsuharu Terashima, Hidenari Yasui, Hiroshi Takahashi

    Japanese Journal of Water Treatment Biology 48 (2) 45-53 2012

    DOI: 10.2521/jswtb.48.45  

    ISSN: 0910-6758

  205. 津波堆積物の再資源化による人工地盤造成

    高橋 弘

    建設の施工企画 (743) 22-29 2012/01

  206. CREATION OF ARTIFICIAL GROUND BY RECYCLING TSUNAMI SLUDGE

    Hiroshi Takahashi, Tomoaki Satomi, Masato Mori

    ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS 1 S3-3-1-S3-3-8 2012

  207. CREATION OF ARTIFICIAL GROUND BY RECYCLING TSUNAMI SLUDGE Peer-reviewed

    Hiroshi Takahashi, Tomoaki Satomi, Masato Mori

    ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS 1 Paper 2632 CD-ROM 2012

  208. INVESTIGATION ON CHARACTERISTICS OF SOIL ADHESION TO METALLIC MATERIAL SURFACE AND SOIL ANIMAL'S CUTICLE Peer-reviewed

    Tomoaki Satomi, Haruya Nihei, Hiroshi Takahashi

    ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS 1 Paper 2634, CD-ROM 2012

  209. Kinematics of wheel-type tracked vehicle with crawlers in between the front and rearwheels Peer-reviewed

    Ryosuke Eto, Tomoaki Satomi, Hiroshi Takahashi

    Journal of Robotics and Mechatronics 24 (6) 933-938 2012

    Publisher: Fuji Technology Press

    DOI: 10.20965/jrm.2012.p0933  

    ISSN: 1883-8049 0915-3942

  210. A two dimensional model to apprehend the dynamic response of shallow buried structures due to impact loading related to mechanical landmine clearing operations Peer-reviewed

    Nuhansyah Sulaiman, Hiroshi Takahashi

    Journal of Robotics and Mechatronics 24 (6) 1005-1013 2012

    Publisher: Fuji Technology Press

    DOI: 10.20965/jrm.2012.p1005  

    ISSN: 1883-8049 0915-3942

  211. Numerical Simulation for Mixing Solids with Liquids using Smoothed Particle Hydrodynamics Method Peer-reviewed

    Tomoaki SATOMI, Kousuke NAKAMURA, Hiroshi TAKAHASHI

    Proc. of the International Symposium on Earth Science and Technology 2011 1 57-62 2011/12/06

  212. Numerical Simulation on Crushing of Concrete Blocks by Mobile Crusher Peer-reviewed

    Hiroshi TAKAHASHI, Yuki SANDO, Tomoaki SATOMI

    Proc. of the International Symposium on Earth Science and Technology 2011 1 75-78 2011/12/06

  213. Study on Movement of Wheel-Typed Vehicle with Crawler between Front and Rear Wheels Peer-reviewed

    Hiroshi TAKAHASHI, Ryosuke ETO, Tomoaki SATOMI

    Proc. of the International Symposium on Earth Science and Technology 2011 1 85-88 2011/12/06

  214. Experimental Investigation on Characteristics of Soil Adhesion to Metallic Material Surface Peer-reviewed

    Tomoaki SATOMI, Haruya NIHEI, Hiroshi TAKAHASHI

    Proc. of the International Symposium on Earth Science and Technology 2011 1 95-100 2011/12/06

  215. Effect of the load condition on frictional heat generation and temperature increase within a tri-cone bit during high-temperature formation drilling Peer-reviewed

    Yuko Suto, Hiroshi Takahashi

    GEOTHERMICS 40 (4) 267-274 2011/12

    DOI: 10.1016/j.geothermics.2011.08.004  

    ISSN: 0375-6505

  216. 試験施工報告:津波堆積物(ヘドロ)再資源化による人工地盤造成

    高橋 弘, 森 雅人

    平成23年度建設施工と建設機械シンポジウム論文集・梗概集 1 248-253 2011/11/30

  217. Vibration Effect on Agitating Torque by Soil Recycling Machine Peer-reviewed

    Hiroshi TAKAHASHI, Dai NOJIRI, Tomoaki SATOMI

    Proc. of the 6th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2011/11/03

  218. Study on Evaluation of Soil Strength Parameters by using the Resistive Forces acting on an Excavating Blade Peer-reviewed

    Tomoaki SATOMI, Chen MIN, Hiroshi TAKAHASHI

    Proc. of the 6th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2011/11/03

  219. Study on Development of New Equipment to Recycle the Waste Asphalt Blocks Containing Roadbed Materials Peer-reviewed

    Hiroshi TAKAHASHI, Shota AOKI, Tomoaki SATOMI

    Proc. of the 6th International Symposium on Advanced Science and Technology in Experimental Mechanics 1 CD-ROM 2011/11/03

  220. Development of New Recycling Method for High-Water Content Sludge by Using Fiber Materials

    Hiroshi TAKAHASHI, Masato MORI, Keiji MASUKO

    Environmental Research Quarterly (165) 34-43 2011/11

    Publisher:

    ISSN: 0285-9769

  221. Experimental Consideration on Adhesion Properties between Clay-rich Soil and Metallic Surface

    Tomoaki SATOMI, Haruya NIHEI, Hiroshi TAKAHASHI

    Proc. of the 12 th Conference on Science and Technology 1 CD-ROM 2011/10

  222. 個別要素法を用いた繊維質固化処理土の変形強度特性の評価 Peer-reviewed

    里見 知昭, 今田 直希, 高橋 弘

    応用力学論文集 14 (1) 375-384 2011/09

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejam.67.I_375  

    eISSN: 2185-4661

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    Fiber-cement-stabilized soil method is an effective way to recycle high-water content mud. The modified soil has several advantages such as high failure stress and high failure strain. However, the quality of the modified soil is not constant and depends on the water content of the mud and additives. Therefore, experimental verification to obtain the strength characteristics of the modified soil is necessary, but conducting experiments under various conditions is ineffective and uneconomic. In this study, a numerical model to estimate deformation-strength characteristics of the modified soil is investigated by using Distinct Element Method (DEM). It was shown that the developed model was effective way to estimate deformation-strength characteristics. Moreover, it was confirmed that the modified soil had high earthquake resistance.

  223. EXPERIMENTAL STUDY AND MODELING OF PRESSURE LOSS FOR FOAM-CUTTINGS MIXTURE FLOW IN HORIZONTAL PIPE Peer-reviewed

    Gumati Amna, Takahashi Hiroshi

    JOURNAL OF HYDRODYNAMICS 23 (4) 431-438 2011/08

    DOI: 10.1016/S1001-6058(10)60133-3  

    ISSN: 1001-6058

  224. Numerical Simulation on Deformation and Strength Characteristics of Fiber-Cement-Stabilized Soil

    Naoki KONDA, Hiroshi TAKAHASHI

    Terramechanics (31) 37-42 2011/04

  225. Study on Development of Small Diameter Curvable Drilling Machine

    Akito MORITA, Hiroshi TAKAHASHI, Yuko SUTO, Tomoaki SATOMI

    Terramechanics (31) 49-54 2011/04

  226. A New Recycling System for High Water Content Mud and Strength Characteristics of Modified Soils Produced by This System

    H.Takahashi, M.Mori

    Proc. of the 1st Vietnam/Japan Joint Symposium on Saigon River Bank Erosion 1 79-88 2011/03/08

  227. Numerical Simulation on Strength and Deformation Characteristics of Fiber-Cement-Stabilized Soil

    N.Konda, H.Takahashi, Y.Suto, T.Satomi

    Proc. of the 1st Vietnam/Japan Joint Symposium on Saigon River Bank Erosion 1 89-99 2011/03/08

  228. Study on Strength and Durability of Fiber-Cement-Stabilized Soils by using Rice Straw

    Ngoc Nguyen-Anh, H.Takahashi, M.Mori, Luu Xuan Loc

    Proc. of the 1st Vietnam/Japan Joint Symposium on Saigon River Bank Erosion 1 100-110 2011/03/08

  229. Study on Fiber-Cement-Stabilized Soils by using Rice Straw Peer-reviewed

    Ngoc NGUYEN ANH, Hiroshi TAKAHASHI, Masato MORI, Luu Xuan LOC

    Proc. of the International Symposium on Earth Science and Technology 2010 1 33-38 2010/12/07

  230. Study on Development of Small Diameter Drilling Machine for Geo-Environmental Investigation Peer-reviewed

    Akito MORITA, Hiroshi TAKAHASHI, Yuko SUTO, Tomoaki SATOMI

    Proc. of the International Symposium on Earth Science and Technology 2010 1 209-214 2010/12/07

  231. A Two Dimensional Mechanical Model to Apprehend the Dynamic Response of Shallow Buried Structures due to Direct Impact Loading on the Soil Surface Related to Mechanical Landmine Clearing Operations Peer-reviewed

    Nuhansyah SULAIMAN, Hiroshi TAKAHASHI

    Proc. of the International Symposium on Earth Science and Technology 2010 1 215-220 2010/12/07

  232. DEM Simulation on Strength and Deformation Characteristics of Ground Materials Peer-reviewed

    Naoki KONDA, Hiroshi TAKAHASHI, Yuko SUTO, Tomoaki SATOMI

    Proc. of the 5th International Symposium on Advanced Science and Technology in Experimental Mechanics CD-ROM 2010/11/05

  233. Study on Development of New Roof Snow Melting System with a Self-Temperature-Controlled Heater by Partial Melting Method Peer-reviewed

    Yuki SANDO, Hiroshi TAKAHASHI, Takashi UMENO, Kenji KOTANI

    Proc. of the 5th International Symposium on Advanced Science and Technology in Experimental Mechanics CD-ROM 2010/11/05

  234. Study on Durability of Fiber-Mixed Planting Soils with Wood Chips for Rainfall Peer-reviewed

    Hiroshi TAKAHASHI, Masato MORI, Satoshi SHIBATA, Takashi NAGANUMA

    Journal of Japanese Society of Experimental Mechanics 10 193-198 2010/09

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/jjsem.10.s193  

    ISSN: 1346-4930

    More details Close

    The durability of fiber-mixed planting soils with wood chips for soil erosion by rainfall was experimentally investigated. It was confirmed that the durability of fiber-mixed planting soils with wood chips for soil erosion by rainfall is larger than that of bark materials which are generally used for planting on the slope. The amount of sediment discharge increased with increasing the slope angle and showed a maximum at a certain slope angle. However, it was confirmed that the amount of sediment discharge by rainfall decreased at high slope angle.

  235. Study on Development of New Equipment for High-Level Utilization of Waste Asphalt Blocks Containing Roadbed Materials Peer-reviewed

    Hiroshi TAKAHASHI, Shouta AOKI, Hisayoshi KAWADA

    Proc. of the Joint 9th Asia-Pacific Conference and Annual Meeting of Japanese Society for Terramechanics 1 CD-ROM 2010/09

  236. Experimental Study on Durability of Fiber-Mixed Planting Soils with Wood Chips for Rainfall Peer-reviewed

    H.Takahashi, T.Satomi, M.Mori, S.Shibata

    Proceddings of the 5th Symposium on Sediment-Related Disasters 1 225-230 2010/08/10

  237. Risk Assessment for Slopes behind Important Cultural Asset in Kyoto City Subjected to Rainfall using Quantification Theory II Invited Peer-reviewed

    Tomoaki SATOMI, Kazunari SAKO, Yuko ISHIDA, Junko NAKAYA, Masaru HORIBE, Ryoichi FUKAGAWA, Hiroshi TAKAHASHI

    Disaster Mitigation of Cultural Heritage and Historic Cities 4 61-68 2010/07/03

  238. 繊維質処理土の変形・強度特性に関する数値シミュレーション

    高橋 弘, 今田 直希

    建設機械 46 (7) 37-42 2010/07/01

    Publisher:

    ISSN: 0385-9878

  239. A new recycling system of waste gypsum board paper : Application of waste gypsum board paper for soil improvement Peer-reviewed

    Hiroshi Takahashi, Hirokazu Kanahama

    International Journal of the Society of Material Engineering for Resources 17 (1) 64-68 2010/03

    DOI: 10.5188/ijsmer.17.64  

    ISSN: 1347-9725

  240. Failure Structure of Red-Soils Modified by Fiber-Cement-Stabilized Method Peer-reviewed

    H. Takahashi, M. Mori, K. Kumakura, K. Kotani, K. Kaneko

    Advances in X-ray Tomography for Geomaterials 435-441 2010/01/22

    Publisher: Wiley-ISTE

    DOI: 10.1002/9780470612187.ch47  

  241. Development of DEM Simulation Model for Deformation of Fiber-Cement-Stabilized Soil Peer-reviewed

    Hiroshi TAKAHASHI, Naoki KONDA

    Proc. of the International Symposium on Earth Science and Technology 2009 1 97-102 2009/12/08

  242. Study on Durability of Fiber-Mixed Planting Soils with Wood Chips for Rainfall Peer-reviewed

    Hiroshi TAKAHASHI, Masato MORI, Satoshi SHIBATA, Takashi NAGANUMA

    Proc. of the 4th International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics CD-ROM 193-198 2009/11/28

    Publisher: The Japanese Society for Experimental Mechanics

    DOI: 10.11395/jjsem.10.s193  

    ISSN: 1346-4930

    More details Close

    The durability of fiber-mixed planting soils with wood chips for soil erosion by rainfall was experimentally investigated. It was confirmed that the durability of fiber-mixed planting soils with wood chips for soil erosion by rainfall is larger than that of bark materials which are generally used for planting on the slope. The amount of sediment discharge increased with increasing the slope angle and showed a maximum at a certain slope angle. However, it was confirmed that the amount of sediment discharge by rainfall decreased at high slope angle.

  243. Study on Hole Cleaning in Horizontal Foam Drilling : Pressure Loss of Foam Flow in Annulus Peer-reviewed

    Amna GUMATI, Hiroshi TAKAHASHI

    Proc. of the 4th International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics CD-ROM 2009/11/28

  244. Evaluation of Performance of Lightweight Aggregate from Dehydration Cake with Waste Materials Peer-reviewed

    Yuko SUTO, Hiroshi TAKAHASHI

    Proceedings of the 10th International Symposium on East Asian Resources Recycling Technology 1 284-287 2009/11/02

  245. Study on Effect of Prior Mixing of Waste Gypsum Powder in the Recycling of Cohesive Soils by Mobile Soil Improvement Machine Peer-reviewed

    Hiroshi TAKAHASHI

    Proceedings of the 10th International Symposium on East Asian Resources Recycling Technology 1 340-343 2009/11/02

  246. A New Recycling System for High Water Content Mud and Its Application for Restoration of Bank Erosion of Saigon River

    Hiroshi TAKAHASHI, Luu Xuan Loc

    Proceedings of the 11th Conference on Science and Technology 1 1606-1611 2009/10/21

  247. DEM Simulation on Strength and Deformation Characteristics of Fiber-Cement-Stabilized Soil Peer-reviewed

    Hiroshi TAKAHASHI, Naoki KONDA

    Proceedings of the 6th International Conference on Matrials Engineering for Resources 1 271-276 2009/10/21

  248. A New Recycling System of Waste Gypsum Board Paper : Application of Waste Gypsum Board Paper for Soil Improvement Peer-reviewed

    Hiroshi TAKAHASHI, Hirokazu KANAHAMA

    Proceedings of the 6th International Conference on Materials Engineering for Resources 1 277-281 2009/10/21

  249. DEM Simulation on Crushing of Concrete Blocks by Mobile Crusher

    H.Takahashi, M.Ando

    Terramechanics 29 5-9 2009/05/15

  250. Study on New Soil Improvement Method by using Wasted Gypsum Board

    H.Takahashi, H.Kanahama

    Terramechanics 29 43-47 2009/05/15

  251. CFD simulation of mixing in anaerobic digesters Peer-reviewed

    Mitsuharu Terashima, Rajeev Goel, Kazuya Komatsu, Hidenari Yasui, Hiroshi Takahashi, Y. Y. Li, Tatsuya Noike

    BIORESOURCE TECHNOLOGY 100 (7) 2228-2233 2009/04

    DOI: 10.1016/j.biortech.2008.07.069  

    ISSN: 0960-8524

    eISSN: 1873-2976

  252. 近年の建築施工関連研究 Invited

    高橋 弘

    建設の施工企画 (708) 11-17 2009/02

  253. DEM Simulation of Crushing for Concrete Blocks by Mobile Crusher Peer-reviewed

    Hiroshi Takahashi, Masakazu Ando

    POWDERS AND GRAINS 2009 1145 843-846 2009

    DOI: 10.1063/1.3180060  

    ISSN: 0094-243X

  254. Study on Strength and Durability for Rainfall of Fiber-cement-stabilized Soils and Its Application for Environmental Preservation

    H.Takahashi, H.Nakamura, M.mori

    Japanese Journal of Multiphase Flow 22 (4) 322-329 2008/12

    Publisher:

    ISSN: 0914-2843

  255. Development of Three-Layer Model and Numerical Simulation for Cuttings Transport in Horizontal Foam Drilling Peer-reviewed

    GUMATI Amna, TAKAHASHI Hiroshi, SUTO Yuko

    Japanese Journal of Multiphase Flow 22 (4) 374-384 2008/12

    DOI: 10.3811/jjmf.22.374  

  256. An Experimental Study on Production of Planting Soil from the Viewpoint of Soil Physical Properties Peer-reviewed

    Jun YAMAZAKI, Hiroshi TAKAHASHI, Hideo KANARI, Masato MORI

    Journal of MMIJ 124 (12) 809-817 2008/12

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/journalofmmij.124.809  

    ISSN: 1881-6118

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    We have already developed a new recycling system for high-water content mud by using paper debris and powder polymer in order to increase the recycling rate of the construction sludge and water purification sludge.Modified soils produced by this system have several features such as high failure strength, high failure strain and high durability for drying and wetting. In spite that modified soils have several features, the utilization of modified soils as landfill materials is not largely increasing because a large amount of free excavated soils which are competing goods of modified soils remains. Therefore, in this study, the utilization of modified soils as planting soils is focused. <BR>In the recycling system developed previously, the addition rate of paper debris is determined based on the water content of the mud. However, it is difficult to produce the planting soils of constant quality because soil/paper mass ratio is not always constant if the water content of the mud is different. Therefore, the purpose of this paper is to investigate the optimal soil/paper mass ratio from the view point of soil physical properties and to produce the planting soils of constant quality regardless of the water content of the mud. It was confirmed through the experiments that the most appropriate soil/paper mass ratio was in the range of 5-6. In case of wet type planting soils, it was impossible to satisfy all target values, but it can be considered that the quality of wet type planting soils will be improved and they will satisfy all target values if the other lightweight construction wastes such as wooden chips are mixed with wet type planting soils.

  257. Effect of Soil Properties on Agitation Torque and Discharge Rate in the Mobile Soil-Recycling Machine

    Hiroshi TAKAHASHI, Masakazu ANDO

    Journal of MMIJ 124 (12) 818-823 2008/12

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/journalofmmij.124.818  

    ISSN: 1881-6118

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    Recently, a mobile soil-recycling machine has been receiving considerable attention in order to recycle the excavated soils produced from the construction sites. This machine is also used to remediate the contaminated soils. Some researches have been already carried out in order to investigate the effects of mechanical factors on the mixing performance of excavated soils and additives. However, there are few researches related to the effects of soil properties on the agitation torque and discharge rate. Because the mixing performance is affected by not only mechanical factors but also soil properties, the investigation of the effects of soil properties on the agitation torque and discharge rate is very important to perform the safe and effective recycling work of excavated soils. Therefore, in this study, the effects of soil properties on the agitation torque and discharge rate were experimentally investigated. The results obtained in this study were summarized as follows:<BR>(1) The discharge rate and agitation torque were strongly affected by the soil properties and water content, and they increased linearly with increasing the packing rate in the mixing chamber.<BR>(2) It was confirmed that the working performance which is defined by the discharge rate per unit agitation torque showed minimum at a certain water content. Once the water content exceeds this value, the working performance increased rapidly. Especially, this tendency was significant for clay soil. Therefore, if the water content is close to the one which leads the minimum working performance, the adjustment of water content by adding water is necessary.<BR>(3) It was confirmed that the agitation torque is largely affected by the cohesive force and internal friction angle for clay soils. In the case of sandy soil, the internal friction angle affects the agitation torque. However, the factors which affect the agitation torque are considered besides the internal friction angle. Therefore, further investigations are still needed.

  258. Study on Producing Lightweight Aggregate from Dehydration Cake with Waste Materials Peer-reviewed

    Yuko SUTO, Hiroshi TAKAHASHI

    Proc. of Int. Symposium on Earth Science and Technology 2008 1 195-200 2008/12/01

  259. Study on Soil Improvement by using Wasted Gypsum Board -- Restraint Technology of Hydrogen Sulfide and Strength Characteristics of Improved Soils -- Peer-reviewed

    Hiroshi TAKAHASHI, Hirokaza KANAHAMA, Yuto MORI, Masato MORI, Hiroyuki NISHIMURA

    Proc. of Int. Symposium on Earth Science and Technology 2008 1 207-214 2008/12/01

  260. DEM Simulation of Boulders by Mobile Crushe Peer-reviewed

    Hiroshi TAKAHASHI, Masakazu ANDO

    Proc. of Int. Symposium on Earth Science and Technology 2008 1 299-306 2008/12/01

  261. Study on Effect of Soil Properties on the Performance of Paddle-Type Soil-Recycling Machine Peer-reviewed

    H.Takahashi, M.Ando

    Proc. of the 16th Int. Conference of ISTVS 1 245-249 2008/11/26

  262. Concept of a Wheel for Micro Lunar Rover Peer-reviewed

    H.Nakashima, H.Takahashi, K.Tateyama, R.Fukagawa, T.Kobayashi, H.Kanamori, S.Aoki, K.Matsui

    Proc. of the 16th Int. Conference of ISTVS 1 156-161 2008/11/26

  263. Experimental Study on Dynamic Strength of Fiber-Cement-Stabilized Soil Peer-reviewed

    H.Takahashi, K.Takahashi, M.Mori

    Proceedings of the 4th Symposium on Sediment-Related Diasaters 1 1-5 2008/08/08

  264. ボンテラン工法の技術開発と施工事例について Invited

    H.Takahashi

    Public Works Management Journal (363) 27-35 2008/08/01

    Publisher:

  265. Temperature memory gauge survey and estimation of formation temperature of the USDP-4 conduit hole at Unzen Volcano, Japan Peer-reviewed

    Yuko Suto, Sumio Sakuma, Hiroshi Takahashi, Nobuo Hatakeyama, Joseph Henfling

    JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH 175 (1-2) 20-27 2008/07

    DOI: 10.1016/j.jvolgeores.2008.03.034  

    ISSN: 0377-0273

  266. 繊維質固化処理土の強度特性に及ぼす攪拌混合時間の影響 Peer-reviewed

    高橋 弘, 金濱 弘和

    建設機械 44 (6) 52-56 2008/05

  267. パドル混合式土質改良機の処理能力に及ぼす土質の影響

    Hiroshi TAKAHASHI, Masakazu ANDO

    建設機械 44 (5) 37-41 2008/03

  268. Laboratory experiments and thermal calculations for the development of a next-generation glacier-ice exploration system: Development of an electro-thermal drilling device Peer-reviewed

    Yuko Suto, Sosuke Saito, Ken-ichi Osada, Hiroshi Takahashi, Hideaki Motoyama, Yoshiyuki Fujii, Yoichi Tanaka

    Polar Science 2 (1) 15-26 2008/03

    DOI: 10.1016/j.polar.2008.02.002  

    ISSN: 1873-9652

  269. Experimental study on initial behavior of water-rock interaction in CO2-added hydrothermal system

    Y. Suto, H. Takahashi, N. Tsuchiya

    WATER DYNAMICS 987 66-69 2008

    DOI: 10.1063/1.2896981  

    ISSN: 0094-243X

  270. Study on Application of Fiber-Cement-Stabilized Soil to the Earthquake-Resistant Landfill Materials Peer-reviewed

    H.Takahashi, K.Takahashi, M.Mori

    Proc. of the 5th Int. Symposium on Earth Science and Technology 1 25-31 2007/12

  271. 機械施工と環境問題

    高橋 弘

    平成19年度新技術情報交換会論文集 1 1-11 2007/11

  272. Rheological Characterization of Mesophilic and Thermophilic Anaerobic Digestion Sludge Peer-reviewed

    M.Terashima, G.Rajeev, K.Komatsu, H.Yasui, H.Takahashi, Y.Lee, T.Noike

    Environmental Engineering Research 44 687-693 2007/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.44.687  

    ISSN: 1341-5115

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    Rheological characteristics of anaerobically digested mesophilic and thermophilic sludge was studied using pipe-line pressure-drop measurement apparatus. Anaerobically digested mesophilic and thermophilic sludge samples were collected from anaerobic digesters operated at 35°Cand 55°C respectively. Rheology of both the sludge was similar to pseudoplastic fluid and was modeled using power equation. The value of model parameters of pseudo-plastic viscosity (μp) and flow behavior index (n) were found to depend on sludge concentration (X). The empirical equations describing the relationship between sludge concentration and model parameters were μp=0.018e (0.071X) ; n=0.68e (-0.0069X) for thermophilic sludge and μp=0.0095e (0.070X) ; n=0.66e (-0.0069X) for mesophilic sludge. The value of μp for thermophilic sludge was found to be significantly lower than mesophilic sludge. Reducing the temperature from 55°C to 32°C during viscosity measurement of thermophilic sludge resulted in a μp value, which was still lower than the mesophilic sludge. These observations suggest that the characteristic of solid in sludge is more influential than temperature in governing the sludgeviscosity. The lower viscosity of thermophilic sludge can be used to operate high rate anaerobic digestion process at high solid concentration without additional energy input.

  273. Fundamental Study on Development of Continuous Recycling Machine for High-Water Content Mud : Effect of Agitation Time on the Strength of Fiber-Cement-Stabilized Mud Peer-reviewed

    H.Takahashi, H.Kanahama, M.Mori

    Proc. of the 9th International Symposium on East Asian Resources Recycling Technology 1 375-378 2007/10/29

  274. Study on Effect of Soil Properties on the Performance of Paddle-Type Soil-Recycling Machine Peer-reviewed

    H.Takahashi, M.Ando, Y.Suto

    Proc. of the 9th International Symposium on East Asian Resources Recycling Technology 1 625-628 2007/10/29

  275. Fundamental Study on Cuttings Transport by Foam in Horizontal Wells Peer-reviewed

    Hiroshi TAKAHASHI, Amna Gumati ABDUSALAM, Yuko SUTO

    Proceedings of the 2nd International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics CD-ROM 2007/09

  276. 画像処理と材料の打撃音による木材の検出-建設混合廃材リサイクル処理機械のための自動分別機能について-

    H.Takahashi

    Construction Machinery and Equipment 43 (9) 72-78 2007/09/01

    Publisher:

    ISSN: 0385-9878

  277. Soild-Liquid Mixing Simulation of Contaminated Soils and Chemical Agent in the Paddle Type Soil-Recycling Machine Peer-reviewed

    H.Takahashi, F.Maruhashi, H.Hashimoto

    Journal of Applied Mechanics JSCE 10 487-496 2007/08

    DOI: 10.2208/journalam.10.487  

  278. 環境と調和した機械施工システム

    H.Takahashi

    Construction Machinery and Equipment 43 (8) 39-43 2007/08/01

    Publisher:

    ISSN: 0385-9878

  279. 大学における施工技術研究の現状

    H.Takahashi

    建設の施工企画 (689) 18-24 2007/07/25

    Publisher:

    ISSN: 1349-547X

  280. Study on Agitation Torque of Excavated Soils and Additives in the Soil-Recycling Machine Peer-reviewed

    H.Takahashi, Y.Mori

    Proceedings of the Joint North America, Asia-Pacific ISTVS Conference CD-ROM 2007/06

  281. 脱水ケーキを利用した機能性球形骨材の生成

    高橋 弘

    第66回石灰石鉱業協会資料 1 2007/05/15

  282. Modeling of Cuttings Transport in Directional Wells using Two-Layer Model Peer-reviewed

    Shigemi NAGANAWA, Hiroshi UEMATSU, Hiroshi TAKAHASHI, Yoshihiro MASUDA, Katsuhiro OHBI

    Journal of the Japanese Association for Petroleum Technology 72 (3) 269-278 2007/05

    Publisher: The Japanese Association for Petroleum Technology

    DOI: 10.3720/japt.72.269  

    ISSN: 0370-9868

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    A previously developed transient cuttings transport model using a two-layer model was modified to enable more practical simulation over the whole trajectory of a directional well. Two-layer model is usually used to describe solid-liquid two-phase flow in pipes in which cuttings bed is formed and the boundary between layers can be clearly recognized. In this study, two-layer model was extended to apply to describing cuttings transport behavior in relatively low hole inclination angles ranging from vertical to about 55 degrees, in which continuous cuttings bed was unlikely formed. Of the constitutive equations used, cuttings re-entrainment rate was re-formulated as a function of hole inclination angle and was corrected to match experimental results. To evaluate the modified model, field scale simulation on cuttings transport was carried out for a simple horizontal well. Simulation results showed that the modified model could successfully demonstrate transient behavior of cuttings transport over the whole trajectory of the well.

  283. New Development and Application of High Water Content Mud Recycling

    M.Mori, J.Yamazaki, H.Takahashi

    Japanese J. of Multiphase Flow 21 (1) 22-28 2007/03

    Publisher:

    ISSN: 0914-2843

  284. Fundamental Study on Separation Function of the Recycling Machine for Mixed Construction Wastes Peer-reviewed

    H.Takahashi, K.Nakajima, H.Hashimoto

    平成18年度建設施工と建設機械シンポジウム論文集 1 127-134 2006/11

  285. Optimum Addition Rate of Paper Debris and Polymer for Fiber-Cement-Stabilized Mud from the View Point of Portability

    M.Mori, J.Yamazaki, H.Takahashi

    (社)日本建設機械化協会東北支部 平成18年度新技術交換会論文集 1 11-21 2006/11

  286. Failure Structure of Red-Soils Modified by Fiber-Cement-Stabilized Method Peer-reviewed

    H.Takahashi, M.Mori, K.Kumakura, K.Kotani, K.Kaneko

    Advances in X-ray Tomography for Geomaterials 1 435-441 2006/10

    DOI: 10.1002/9780470612187.ch47  

  287. An Experimental Study on Strength of Fiber-Cement-Stabilized Mud by use of Paper Debris/Paper Sludge and Durability for Drying and Wetting Invited

    M.Mori, H.Takahashi

    Proceedings of the 10th Organized Multiphase Flow Forum 1 29-37 2006/10

  288. Study on Development of non-Diffusive-Type Recovering Machine for High Water Content Mud Peer-reviewed

    H.Takahashi, Y.Harada, K.Takahashi

    Proc. of Int. Symposium on Advanced Fluid/Soild Science and Technology in Experimental Mechanics 1 24-29 2006/09

  289. An Experimental Study on Strength of Fiber-Cement-Stabilized Mud by use of Paper Sludge and Durability for Drying and Wetting Tests Peer-reviewed

    M.Mori, H.Takahashi, K.Kumakura

    Proc. of Int. Symposium on Advanced Fluid/Soild Science and Technology in Experimental Mechanics 1 30-35 2006/09

  290. Urgent Countermeasure Construction for Imogawa River Blockage by Fiber-Cement-Stabilized Method Peer-reviewed

    H.Takahashi, M.Mori, S.Shibata, K.Sasaki

    Proceedings of the 3rd Sediment-Related Disasters 1 19-24 2006/08

  291. Fundamental Study on Continous Recovery System for Soft Sludge Generated at Disaster Site Peer-reviewed

    H.Takahashi, K.Takahashi, Y.Suto

    Proceedings of the 3rd Symposium on Sediment-Related Disasters 1 25-30 2006/08

  292. Study on Red Soil Improvemnt to Reduce the Marine Damage due to Outflow of Red Soil Peer-reviewed

    H.Takahashi, H.Nakamura, M.Mori, K.Kotani

    Proceedings of the 3rd Symposium on Sediment-Related Disasters 1 99-104 2006/08

  293. Study on Agitation Torque of Excavated Soils and Additives in the Soil-Recycling Machine Peer-reviewed

    H.Takahashi, Y.Sakai, Y.Mori

    Journal of Applied Physics 9 (1) 679-687 2006/08

    DOI: 10.2208/journalam.9.679  

  294. 古紙破砕物を用いた建設汚泥の新しい再資源化工法

    H.Takahashi

    Construction Machinery and Equipment 42 (8) 50-56 2006/08/01

    Publisher:

    ISSN: 0385-9878

  295. Geomechatronics - Interaction between ground and construction machinery and its application to construction robotics Peer-reviewed

    K. Tateyama, S. Ashida, R. Fukagawa, H. Takahashi

    JOURNAL OF TERRAMECHANICS 43 (3) 341-353 2006/07

    DOI: 10.1016/j.jterra.2005.05.008  

    ISSN: 0022-4898

  296. An Experimental Study on Strength of Fiber-Cement-Stabilized Mud by use of Paper Sludge and Durability for Drying and Wetting Tests Peer-reviewed

    M.Mori, H.Takahashi, K.Kumakura

    Journal of the Mining and Material Processing Institute of Japan 122 (6-7) 353-361 2006/07

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.122.353  

    ISSN: 0916-1740

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    We have already developed the new recycling system for high-water content mud by using paper debris and powder polymer. The modified soils produced by this method have several features such as high failure strength, high failure strain and high durability for drying and wetting. These features are due to the existence of the fibers in the modified soils.<BR>By the way, the amount of paper debris which is necessary in this method depends on the water content, and if the water content is very high, a huge amount of paper debris is necessary to modify the high water content mud. As the cost of paper debris is strongly affected by the fluctuation of the market price, the stabilization and reduction of the processing cost will be possible if the amount of paper debris is reduced. Therefore, in this study, the possibility to use the paper sludge which is discharged in the recycling process of used paper as a substitute for paper debris was investigated.<BR>It was confirmed through the drying and wetting tests that paper sludge can be used as a substitute for paper debris because the modified soils by use of paper sludge showed high durability for drying and wetting. However, the strength of the modified soils by use of paper sludge was not high enough. Therefore, the modified soils by use of paper sludge and paper debris were made, and the strength property of them was examined. In results, when the paper debris of 30kg/m3 was added in the high water content mud, enough strength was obtained. This addition rate of paper debris was approximately half of the one in the previous method without using the paper sludge. Furthermore, it was found that powder polymer and chemical flocculants do not affect the durability and strength of the modified soils. Therefore, it was confirmed that about 75% cost reduction is possible if the paper sludge is used and powder polymer and chemical flocculants are not used.

  297. 推進工事にともなう掘削排土対策の現状と今後の課題

    H.Takahashi

    Magazine, Micro-tunnelling Technology 20 (4) 3-8 2006/04/10

  298. Snow Removal Seminar to Improve Snow Removal Technologies for Roads in Tohoku, Japan Peer-reviewed

    H.SHirahama, K.Aso, H.Takahashi

    Proc. of the 12th International Winter Road Congress CD-ROM 2006/03

  299. Measurement of Heat Generation in Drill Bits under Simulated Drilling Conditions and Estimation of Temperatures in Drill Bits during Drilling Peer-reviewed

    Y.Suto, K.Yoshimoto, H.Takahashi

    Journal of the Japanese Association for Petroleum Technology 71 (1) 123-130 2006/01

    Publisher:

    DOI: 10.3720/japt.71.123  

    ISSN: 0370-9868

  300. Study on Recycling of Dehydration Cake Produced from Crushed Rock Quarries Peer-reviewed

    H.Takahashi, K.Yoshimoto, Y.Suto

    Proc. of 3rd International Workshop on Earth Science and Technology 1 81-88 2005/12/05

  301. Study on Development of Neutral Fiber Solidification Material by use of Wasted Gypsum Boards and its Application to Soil Improvement Peer-reviewed

    H.Takahashi, H.Akuzawa, M.Mori

    Proc. of 3rd International Workshop on Earth Science and Technology 1 161-170 2005/12/05

  302. Study on Recycling of Wasted Soils and Paper Sludge: Application of Paper Sludge to Soil Improvement Peer-reviewed

    H.Takahashi, M.Doi, M.Mori, Y.Suto

    Proc. of 3rd International Workshop on Earth Science and Technology 1 177-185 2005/12/05

  303. Study on Environmental Preservation Type Soil Restoration Method to Reduce the Marine Damage due to Outflow of Red Soil Peer-reviewed

    H.Takahashi, H.Nakamura, M.Mori, K.Kumakura

    Proc. of 3rd International Workshop on Earth Science and Technology 1 187-196 2005/12/05

  304. New Recycling Method of Construction Sludge -- Fiber-Cement-Stabilized Mud Method and Strength Characteristics of Modified Soils -- Peer-reviewed

    H.Takahashi, M.Mori

    建設施工と建設機械シンポジウム論文集 1 17-24 2005/11

  305. Utilization of Fiber-Cement-Stabilized mud as Light Weight Landfill Materials

    K.Kumakura, M.Mori, H.Takahashi

    平成17年度新技術情報交換会論文集 1 51-56 2005/11

  306. Study on Durability of Fiber-Cement-Stabilized Mud Produced from Construction Sludge in Freezing and Thawing Tests Invited Peer-reviewed

    H.Takahashi, M.Mori, K.Kumakura

    Proc. of the 5th Int. Conf. on Materials Engineering for Resources CD-ROM 2005/10/20

  307. Study on Task Planning for Autonomous Scooping of Crushed Rocks by an Intelligent Wheel Loader with a Stereo Vision System Peer-reviewed

    Hiroshi TAKAHASHI, Hazumu ABE

    Proc. of 15th Internation Conference of the Int. Society for Terrain-Vehicle Systems CD-ROM 2005/09/25

  308. Study on the Breaking Performance of Excavated Soil-Recycling Machine for Viscous Clay Peer-reviewed

    H.Takahashi, M.Doi

    Proc. of Applied Mechanics 8 573-582 2005/08

    DOI: 10.2208/journalam.8.573  

  309. A New Recycling System of High Water Content Mud: Production of High Quality Soil from Construction Sludge Peer-reviewed

    H.Takahashi, M.Mori, K.Kumakura

    Proc. of the 5th Int. Conference on Micromechanis of Granular Media 2 1067-1071 2005/07

  310. An Experimental Study on the Durability of Fiber-Cement-Stabilized Mud by Repeated Cycle Test of Drying and Wetting Peer-reviewed

    M.Mori, H.Takahashi, K.Kumakura

    Journal of Mining and Material Processing Institutre of Japan 121 (2-3) 37-43 2005/03

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.121.37  

    ISSN: 0916-1740

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    In order to utilize the fiber-cement-stabilized mud as landfill materials, it is very important to know the durability of the soils. Therefore, repeated cycle tests of drying and wetting were carried out by using the cement-stabilized mud and the fiber-cement-stabilized mud, and the durability of the modified soils was experimentally investigated. It was confirmed that the cement-stabilized mud deteriorated with increasing the cycle number. This result was not inconsistent with the results obtained by the previous researches. On the other hands, it was confirmed that the fiber- cement-stabilized mud did not deteriorate even if the cycle number increased. In order to explore the reason why the fiber-cement-stabilized mud shows high durability, the observation of the inside and the surface of specimens was carried out by using the microscope. Furthermore, the unconfined compression tests were carried out and failure strains were measured for both the cement-stabilized mud and the fiber-cement-stabilized mud. It was found from the unconfined compression tests that the failure strains of fiber-cement-stabilized mud were much larger than those of cement-stabilized mud. Therefore, it was confirmed that the reason why the fiber-cement-stabilized mud did not deteriorate was that the fiber-cement-stabilized mud forms the complicated structure which the soil particles and fiber are intertwined, and this complicated structure strengthens the combined force between soil particles and restrains the deterioration of the modified soils.

  311. Durability and Utilization System of Fiber-Cement-Stablized-Mud Produced from Construction Sludge Peer-reviewed

    M.Mori, H.Takahashi, K.Kumakura

    Proc. of the 2nd Int. Workshop on Earth Science and Technology 1 209-214 2004/12

  312. Study on Recognition of Fragment Rock Piles and Estimation of the Amount of Sediment Rocks by use of Stereo Vision System Peer-reviewed

    H.Takahashi, M.Yokoyama

    Proc. of the 2nd Int. Workshop on Earth Science and Technology 1 223-228 2004/12

  313. Study on the Breaking Performance of Excavated Soil Recycling Machine for Viscous Clay

    H.Takahashi, M.Doi, Y.Suto, H.Hashimoto

    Proc. of the 2nd Organized Terramechanics Workshop in Sendai 1 13-20 2004/11

  314. Syudy on non-Diffusion Drilling Machine in the Sludge

    H.Takahashi, Y.Harada, Y.Suto

    Proc. of the 2ne Organized Terramechanics Workshop in Sendai 1 21-24 2004/11

  315. Fundamental Study on Small Diameter Autonomous Excavating Machine of Soils

    H.Takahashi, T.Sameshima, Y.Suto

    Proc. of the 2nd Organized Terramechanics Workshop in Sendai 1 27-30 2004/11

  316. Fundamental Study on Electrical Thermal Melt-Drilling Device for a Next Generation Type Drilling Exploration System for Glacier Ice

    Y.Suto, S.Saito, H.Takahashi

    Proc. of the 2nd Organized Terramechanis Workshop in Sendai 1 55-58 2004/11

  317. Geomechatronics-Interaction between Ground and Construction Machinery and its application to Construction Robotics Peer-reviewed

    K.Tateyama, S.Ashida, R.Fukagawa, H.Takahashi

    Proceedings of the 7th Asia-Pacific Conference of the International Society for Terrain-Vehicle Systems 1 362-372 2004/09

  318. Automation and Intelligence in Crushed Rock and Limestone Quarries in Japan Invited Peer-reviewed

    Hiroshi TAKAHASHI

    Proceedings of the 7th Asia-Pacific Conference of the International Society for Terrain-Vehicle Systems 1 1-7 2004/09

  319. The State-of-the-Art of Snow Removers and Snow Removing System in Japan Peer-reviewed

    H.Takahashi, T.Sai, A.Yamazaki, T.Fukahori, J.Yamada

    Proceedings of the 7th Asia-Pacific Conference of the International Society for Terrain-Vehicle Systems 1 483-491 2004/09

  320. Fundamental Study on Automation of Rock Splitting Method Peer-reviewed

    H.Takahashi, H.Abe

    Journal of the Mining and Materials Processing Institute of Japan 120 (9) 500-507 2004/09

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.120.500  

    ISSN: 0916-1740

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    Recently, the rock splitting method is often used to construct the tunnel because the blasting method is restricted in the construction site near city area suburbs. However, the working efficiency of the rock splitting method is extremely low. Therefore, the automation of rock splitting method has been receiving considerable attention to increase the working efficiency. This study is concerned with the automation of rock splitting method for tunnel construction. In order to automate the rock splitting task, the following tasks are necessary:<BR>(1) Automatic recognition of holes drilled on the cutting face.<BR>(2) Automatic control to make the tip of the bigger move to the recognized holes.<BR>(3) Automatic insert of the bigger into the drilled hole.<BR>In this study, the image processing procedure was proposed by using CCD camera and laser pointer in order to recognize the location of the holes drilled on the uneven cutting surface. Furthermore, the algorithm to insert the bigger automatically into the drilled holes by using the strain gauges attached on the bigger. It was confirmed through the model experiment that this algorithm worked well. If the hole is drilled vertically to the cutting face, it took 1 minute to complete the insert of the bigger. However, if the hole is not drilled vertically to the cutting face, it took 12 minutes to complete the insert of the bigger, and this time is much larger than that in the case that the hole is drilled vertically. Therefore, it was confirmed that the holes should be drilled vertically to the cutting face to increase the working efficiency by rock splitting method.

  321. Analysis on the Resistive Forces acting on the Bucket of Power Shovel in the Excavating Task of Piled Fragment Rocks Peer-reviewed

    H.Takahashi, Y.Saito

    Journal of Applied Mechanics JSCE 7 (2) 787-796 2004/08

    Publisher:

    DOI: 10.2208/journalam.7.787  

    ISSN: 1345-9139

  322. Estimation of Exposed Temperature History of Bit and Bit Performance while Drilling High-Temperature Oil Wells Peer-reviewed

    Y.Suto, S.Yamazaki, S.Saito, N.Hatakeyama, H.Takahashi

    Journal of the Japanese Association for Petroleum Technology 69 (4) 395-403 2004/07

    Publisher:

    DOI: 10.3720/japt.69.395  

    ISSN: 0370-9868

  323. 故紙を混ぜて建設汚泥をリサイクル-繊維質固化処理土の強度特性と施工事例-

    Hiroshi TAKAHASHI, Masato MORI

    建設の機械化 651 (651) 28-33 2004/05

    Publisher:

    ISSN: 0285-5453

  324. Study on the mechanism of over-head-type load-haul-dump with a vessel Peer-reviewed

    H Takahashi, Y Morikawa, K Tateyama, R Fukagawa

    JOURNAL OF TERRAMECHANICS 41 (2-3) 175-185 2004/04

    DOI: 10.1016/j.jterra.2004.02.005  

    ISSN: 0022-4898

  325. 繊維質固化処理土の地震対策用地盤材料としての可能性

    Hiroshi TAKAHASHI

    月刊下水道 27 (5) 69-72 2004/03

  326. A consideration on the durability of fiber-cement-stabilized mud produced from construction sludge Peer-reviewed

    H Takahashi, E Maruhashi, Y Suto, M Mori, K Kumakura, M Ohtani, T Ishii

    X-RAY CT FOR GEOMATERIALS SOILS, CONCRETE, ROCKS 193-198 2004

  327. 建設機械知能化の現状と展望

    Hiroshi TAKAHASHI

    建設の機械化 (647) 10-16 2004/01

    Publisher:

    ISSN: 0285-5453

  328. A Consideration on the Durability of Fiber-Cement-Stabilized Mud produced from Construction Sludge

    H.Takahashi, F.Maruhashi, Y.Suto, M.Mori, K.Kumakura, M.Ohtani, T.Ishii

    Proc. of International Workshop on X-Ray CT for Geomaterials 175-180 2003/11

  329. Three Dimensional Visualization of the Excavation Mechanism for Dry Sandy Ground by a CT-scan Technique

    R.Fukagawa, T.Kobayashi, K.Tateyama, H.Takahashi

    Proc. of the 9th European Conference of the ISTVS 1 128-135 2003/09

  330. Analysis on the Resistive Forces acting on the Bucket of Power Shovel in the Excavating Task of Crushed Rocks Peer-reviewed

    H.Takahashi, K.Minakami, Y.Saito

    Journal of Applied Mechanics 6 603-612 2003/08

    Publisher:

    DOI: 10.2208/journalam.6.603  

    ISSN: 1345-9139

  331. A New Utlization System of Light-Weighted Landfill Materials Produced from High Water-Content Mud Peer-reviewed

    H.Takahashi, M.Mori, K.Horii, A.Ousaka, K.Kotani, T.Naganuma

    Proc. of 4th ASME-JSME Joint Fluids Engineering Conference CD-ROM 2003/07

  332. Swirling Flow Effect on Mixing Performance of Excavated Soils and Additioves in Soil-Recycling Machine Peer-reviewed

    H.Takahashi, S.Sekino, H.Hashimoto

    Proc. of 4th ASME-JSME Joint Fluids Engineering Conference CD-ROM 2003/07

  333. Modeling of Cuttings Transport for Hole Cleaning in Horizontal and Highly Inclined Wells by Coild Tubing Drilling Peer-reviewed

    H.Takahashi

    Proc. of 4th ASME-JSME Joint Fluids Engineering Conference CD-ROM 2003/07

  334. Energy Loss in Snow-Water Mixture Flow Peer-reviewed

    M.Sasaki, T.Takeuchi, H.Takahashi

    Proc. of 4th ASME-JSME Joint Fluids Engineering Conference Cd-ROM 2003/07

  335. Study on the Recycling System of Lightweight Fiber-Stabilized Landfill Materials from High-Water Content Construction Sludge Peer-reviewed

    H.Takahashi, M.Mori, K.Kumakura, M.Ohtani, T.Ishii

    Journal of the Society of Materials Engineering for Resources of Japan 16 (1) 21-26 2003/06

    Publisher: Akita University

    DOI: 10.5188/jsmerj.16.21  

    ISSN: 0919-9853

  336. Study on Autonomous Drilling Machine of Small Diameter for Soft Rocks

    H.Takahashi, Y.Yagyu

    Terramechanics (23) 105-110 2003/06

  337. Study on Slip in Lateral Direction in Autonomous Locomotion of Articulated Steering Wheeled Vehicle

    H.Takahashi, K.Terada

    Terramechanics (23) 99-104 2003/06

  338. Fundamental Study on Automatic Cleaning Machine of Fallen Ores

    H.Takahashi, W.Izumi

    Terramechanics (23) 93-98 2003/06

  339. A Proposal of New Recycling System of High-Water Content Mud by using Paper Debris and Polymer and Strength Property of Recycled Soils Peer-reviewed

    M.Mori, H.Takahashi, A.Ousaka, K.Horii, I.Kataoka, T.Ishii, K.Kotani

    J. of the Mining and Material Processing Institute of Japan 119 (4-5) 155-160 2003/05

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.119.155  

    ISSN: 0916-1740

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    A new recycling system by using paper debris and polymer has been developed for high water-content mud such as bed materials in the river and lake, and construction sludge. The new recycling system proposed in this study consists of two steps. In the first step, the paper debris are added for controlling water content of mud and strengthening the bonding force between mud clusters. In the second step, polymer materials are added to increase the bonding force of mud particles in the cluster. By using this system, 200- 500% water-content mud has been modified to landfill materials by 20-30 minutes mixing process.<BR>The unconfined and triaxial compression tests were carried out to examine the strength of the recycled soils. It was confirmed through the tests that the failure strain and residual strength of the recycled soils produced by the new system are much larger than those of recycled soils produced by the conventional method. Furthermore, the transformation coefficient of the recycled soils is close to the one of the ordinary soils. Therefore, it can be concluded that the recycled soils produced by the new system are much more suitable for landfill materials than the recycled soils produced by the conventional method.

  340. ゼロエミッションとコスト縮減-建設汚泥を再資源化するボンテラン工法

    T.Ishii, H.Takahashi

    月刊下水道 26 (8) 19-23 2003/05

  341. 建設発生土・建設汚泥の再資源化処理-処理機械の構造と作用・効果について-

    H.Takahashi, M.Mori

    骨材資源 34 (136) 189-198 2003/01

    Publisher:

    ISSN: 0286-9179

  342. Numerical Simulation on Rock Breaking by Penetration of Disc Cutter Peer-reviewed

    H.Takahashi, T.Sato, K.Kaneko

    Proc. of Tunnel Engineering, JSCE 12 69-76 2002/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/journalte1991.12.69  

    ISSN: 1884-9091

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    In this study, numerical simulations on rock breaking by penetration of disc cutter were carried out by using Distinct Elements Method (DEM). A rock sample consisted of 293706 spherical elements of 2mm diameter. Three kinds of disc cutter were used in this simulation. They were wedge type, round type and flat type. These disc cutters were modeled and were penetrated into the rock. In this simulation, the forces acting on the disc cutter were calculated and they were compared with the results obtained in the previous experiment. The calculated results were well agreed with the experimental ones. Furthermore, the fractures generated in the rock were simulated for three types of disc cutter with different shape. In the case of round and flat type disc cutter, the dominant fracture was observed. It was generated just under the disc cutter and was connected with the fracture generated from the neighbor disc cutter. That is, adjacent breaking was simulated.

  343. Study on the Mechanism of Over-Head-Type Load-Haul-Dump with a Vessel Peer-reviewed

    H.Takahashi, Y.Morikawa, K.Tateyama, R.Fukagawa

    Proc. of 14th International Conference of the International Society for Terrain-Vehicle Systems CD-ROM 2002/10

  344. Model Analysis on Limit Deposit Velocity in Horizontal and Inclined Coiled Tubing Drilling

    H.Takahashi

    Proc. of 2nd World Engineering Congress, Geotechnical Enginnering and Transportation 121-128 2002/07

  345. Basic Properties of Adhesion between Clays and Soild Surfaces

    R.Fukagawa, T.Tamai, K.Tateyama, H.Takahashi

    Proc. of 2nd World Engineering Congress, Geotechnical Enginnering and Transportation 3-9 2002/07

  346. Study on the Automation of Boulder Breakage by Use of Force Sensors and Image Processing Peer-reviewed

    H.Takahashi, T.Monden, K.Kaneko

    J. of the Mining and Material Processing Institute of Japan 118 (5-6) 369-375 2002/06

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.118.369  

    ISSN: 0916-1740

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    In this study, the automatic system for boulder breakage by use of force sensors and image processing was investigated. In order to carry out the full automation of the boulder breakage, the following three subtasks have to be automated: 1)detection of the boulder, 2)control of the chisel to move to the boulder and 3)carrying out the boulder breakage. In this paper, two algorithms to automate the 3) task were proposed by use of force sensors and image processing. One is the algorithm to detect the chisel sliding while pressing the boulder by the chisel. This algorithm is based on the rate of strain change measured by strain gauges which were attached beside the chisel. The other one is the algorithm to detect the boulder breakage by use of the features from the signals of strain gauges and ones from image processing. It was confirmed through the experiments that these algorithms proposed here worked well.

  347. Outline for a New Discipline: Geomechatronics Invited Peer-reviewed

    R.Fikagawa, K.Tateyama, H.Takahashi

    Proc. of Japan Society of Civil Engineering 2002 (700/Ⅵ-54) 1-14 2002/03

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.2002.700_1  

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    Geomechatronics is a technical field in which the Geotechniques is fused with the Mechatronics that is the technical field to promote the automatic control of machines by using the electronics. In the field of Geomechatronics, the machinery, which treats the geomechanical materials such as soils and rocks, automatically evaluates the properties and conditions of the ground and determines the optimum controlling method of itself for the ground with the base of the interaction between the machine and ground. We introduce the elemental techniques required for geomechatronics and some researches for practical use in this field, and then express the progressing view of this research and technical field.

  348. Study on Kinematics and Control of Path Tracking for Autonomous Locomotion of Articulated Tracked Earth Moving Peer-reviewed

    H.Takahashi, K.Tokashiki, J.Yamada

    Proc. of the 6th Asia-Pacific Conference of the International Society for Terrain-Vehicle Systems 1 261-271 2001/12

  349. Study on the Mixing Behavior of Excavated Soils and Additives in the Mixing Chamber of Excavated Soil-Recycling Machine Peer-reviewed

    H.Takahashi, H.Yamanaka, S.Sekino, H.Hashimoto

    Proc. of the 6th International Symposium on East Asian Resources Recycling Technology 1 97-101 2001/10

  350. Automatic System for Boulder Breakage by Using Force Sensors and Image Processing Peer-reviewed

    H.Takahashi, T.Monden, K.Tateyama, R.Fukagawa

    Proc. of the 18th International Symposium on Automation and Robotics in Construction 1 287-292 2001/09

  351. Modeling of the Piled Fragment Rocks and Resistive Forces acting on the Bucket in the Scooping Task

    H.Takahashi

    Proc. of the 1st Organized Terramechanics Workshop in Sendai 1 18-21 2001/09

  352. Fracture Generation and Water-Rock Interaction Processes in Supercritical Deep-Seated Geothermal Reservoirs Peer-reviewed

    T. Hashida, G. Bignall, N. Tsuchiya, H.Takahashi, K. Tanifuji

    Geothermal Resources Council Transactions 25 225-229 2001/08

  353. Numerical Simulation on the Boulder Breakage by Hydraulic Breaker Peer-reviewed

    H.Takahashi, W.Izumi, K.Kaneko

    Journal of Applied Mechanics 4 307-316 2001/08

    DOI: 10.2208/journalam.4.307  

  354. Coefficients of Wall Friction in Snow-Water Mixtures Peer-reviewed

    M.Sasaki, T.Takeuchi, H.Takahashi

    Proc. of 4th International Conference on Multiphase Flow(CD-ROM) 2001/06

  355. Path generation for autonomous locomotion of articulated steering wheel loader Peer-reviewed

    H Takahashi, Y Konishi

    COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING 16 (3) 159-168 2001/05

    DOI: 10.1111/0885-9507.00222  

    ISSN: 1093-9687

  356. Kinematics for Autonomous Locomotion of Articulated Steering Vehicles Peer-reviewed

    H.Takahashi, K.Tokashiki, K.Kaneko

    Proc. of the 2nd Asian Symposium on Industrial Automation and Robotics 1 95-100 2001/05

  357. Theoretical Consideration on the Behavior of Excavated Soils in a Vertical Shield Excavating Method Peer-reviewed

    H.Takahashi, J.Matsui, K.Tamura

    Journal of Hydraulic Engineering 45 1255-1260 2001/03

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/prohe.45.1255  

    ISSN: 0916-7374

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    In order to apply the vertical shield machine for the construction of the large diameter vertical shaft, a new mechanism to carry the excavated particles on the excavated surface is necessary because the direction of excavation is equal to the direction of gravity. In the previouss tudy, a new method to carry the excavated by the rotating wall-jet particles from the initial position to the bottom center of the vertical shaft was proposed and model experiments were carried out. In this study, the behavior of excavated particles was analyzed theoretically. It was confirmed through the analysis of the behavior of water jet and excavated particles at the bottom of the vertical shaft that the water jet in air is desirable and the cutter spoke should have an inclination angle.

  358. Experimental Study on the Discharge of Excavated Particles by the Rotating Wall-Jet in a Vertical Shield Method Peer-reviewed

    H.Takahashi, J.Matsui, K.Tamura

    Japanese J. of Multiphase Flow 15 (1) 47-62 2001/03

    Publisher: THE JAPANESE SOCIETY FOR MULTIPHASE FLOW

    DOI: 10.3811/jjmf.15.47  

    ISSN: 0914-2843

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    In order to apply the vertical shield machine for the construction of the large diameter vertical shaft, a new mechanism to carry the excavated particles on the excavated surface is necessary because the direction of excavation is equal to the one of gravity. In this study, a new method to carry the excavated particles by the rotating wall-jet from the initial position to the bottom center of the vertical shaft was proposed. A small experimental apparatus was made based on the similarity law and some experiments were carried out. It was confirmed that excavated particles were carried by the rotating wall-jet, and the proposed method by using the rotating wall-jet worked well. Furthermore, it was found that the cutter spoke should have the low inclination angle and water jet should be the one in air to achieve the high discharge efficiency.

  359. Fundamental Study on the Automatic Loading of Soils by Cooperative Task between Wheel Loader and Dump Truck Peer-reviewed

    H.Takahashi, Y.Morikawa

    Proc. of Japan Society of Civil Engineering 2001 (672/VI-50) 169-177 2001/03

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.2001.672_169  

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    In this study, the control algorithm was investigated to carry out the automatic loading of soils to the dump truck by cooperative task between the wheel loader and dump truck. A CCD camera was set on the dump truck and the image from the camera was processed to detect the landmarks on the wheel loader. From the coordinates of two landmarks in the image coordinate, the location and orientation of the dump truck was recognized. In the experiment, the path of the dump truck from the initial position to the wheel loader was generated and the dump truck was controlled to follow the generated path. It was confirmed that the algorithm proposed here works well.

  360. Study on the mixing behavior of excavated soils and additives in an excavated soil-recycling machine Peer-reviewed

    H Takahashi, H Yamanaka, S Sekino, H Hashimoto

    POWDERS AND GRAINS 2001 1 343-346 2001

  361. Experimental study on rock cutting by use of actual size disc cutter with round tip Peer-reviewed

    H Takahashi, T Sato, H Yamanaka, K Kaneko, K Sugawara

    MODERN TUNNELING SCIENCE AND TECHNOLOGY, VOLS I AND II 1 599-604 2001

  362. Vision system for intelligent loaders to recognize the piled fragment rocks Peer-reviewed

    H Takahashi, T Sugasawa

    PROCEEDING OF THE FOURTH INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING FOR RESOURCES, VOL 2 2 243-248 2001

  363. Path Generation for Articulated Steering Wheel Loader and Autonomous Locomotion by use of Vision System Peer-reviewed

    H.Takahashi, Y.Konishi

    Proc. of 6th International Conference on Control, Automation, Robotics and Vision (CD-ROM) 2000/12

  364. Study on the Mxing of Excavated Soils and Additives in an Excavated Soil-Recycling Machine Peer-reviewed

    H.Takahashi, H.Yamanaka, S.Sekino, H.Hashimoto

    Journal of the Mining and Materials Processing Institute of Japan 116 (10) 839-846 2000/10

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.116.839  

    ISSN: 0916-1740

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    In the previous study, a simulator to analyze the behavior of excavated soils in the soil-recycling machine with single shaft was developed. In this study, the simulator developed in the previous study was extended to the soil-recycling machine with dual shafts and numerical simulation on the "Processed volume" and "Distance of mixing completion" was carried out. Furthermore, an experimental apparatus was made and mixing experiments of excavated soils and additives were carried out. From the comparison between the simulated results and experimental ones, the spring constant in the normal direction which is necessary to carry out the simulation was determined for each soil. It was confirmed that the spring constant decreases with increase the angle of internal friction of the soil.<br> By using this simulator, several simulations were carried out. The effects of some parameters such as paddle inclination angle and pitch of the paddle on the mixing performance were made clear through them.<br>

  365. Study on the Vision System to Recognize the Shape of the Rock Pile by Use of Image Processing Peer-reviewed

    H.Takahashi, T.Sugasawa, S.Saito

    Journal of the Mining and Material Processing Institute of Japan 116 (9) 767-772 2000/09

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.116.767  

    ISSN: 0916-1740

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    Robotic excavation and loading task have been receiving considerable attention in several fields, especially in mining and construction site. In order to realize the robotic excavation by the wheel loader, the robot has to recognize the shape of the rock pile because the excavation task is planned based on the shape of the rock pile. This paper is related to the vision system to recognize the shape of the rock pile. A CCD camera was used to obtain the image of the rock pile. The image processing procedure was proposed to detect the rock pile area from the original image.<br>

  366. Experimental Study on Rock Breaking by Use of Actual Size Disc Cutter Peer-reviewed

    H.Takahashi, H.Yamanaka, K.Kaneko, K.Sugawara

    Journal of Applied Mechanics 3 295-301 2000/08

    Publisher:

    DOI: 10.2208/journalam.3.295  

    ISSN: 1345-9139

  367. Simulation of the Resistive Forces Acting on the Bucket of Wheel Loader in the Robotic Scooping by Use of DEM Peer-reviewed

    H.Takahashi

    Proc. of the IASTED International Conference on Robotics and Automation 1 230-235 2000/08

  368. Fundamental Study on the Simulator to Analyze the Behavior of Excavated Soils in an Excavated Soil-Recycling Machine Peer-reviewed

    H.Takahashi, K.Tokashiki, H.Yamanaka, S.Sekino, H.Hashimoto

    Journal of the Mining and Materials Processing Institute of Japan 116 (6) 502-508 2000/06

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.116.502  

    ISSN: 0916-1740

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    A soil-recycling machine has been receiving considerable attentions in order to recycle the excavated soils at the construction site. Excavated soils are fed into this machine and they are mixed with the cement or slaked lime. But, the mixing process is very complicated because not only many mechanical factors such as paddle inclination angle, pitch and shaft rotation number, but also physical properties of soils affect the mixing process in the chamber.<br> In order to design the soil-recycling machine, the effect of these factors on the mixing process has to be fully investigated. However, an experimental investigation requires much cost, and this is not only uneconomical but also ineffective.<br> In this study, the simulation model to estimate the behavior of soils in the mixing chamber is developed by using Distinct Element Method (DEM) to assist the economical and effective design of the soil-recycling machine. A numerical simulation of the soil behavior was carried out based on this developed model. It was confirmed that the processing volume of the soils showed a maximum at 45 degrees of the paddle inclination angle.<br>

  369. Analysis on the Resistive Forces acting on the Bucket in the Scooping Task of Piled Fragment Rocks by Use of Distinct Element Method Peer-reviewed

    H.Takahashi

    Journal of the Society of Materials Engineering for Resources of Japan 12 (1/2) 19-26 1999/12

    Publisher: Akita University

    DOI: 10.5188/jsmerj.12.19  

    ISSN: 0919-9853

  370. A Numerical Simulation of Unsteady Flow in an Air-Lift Pump for Lifting Deep-sea Mineral Resources Peer-reviewed

    N.Hatakeyama, H.Takahashi, T.Saito, T.Masuyama

    Journal of the Mining and Materials Processing Institute of Japan 115 (13) 958-964 1999/12

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.115.958  

    ISSN: 0916-1740

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    It is anticipated that the dynamical responses to changes of air supply and solid supply become more complicated in an air-lift pump for lifting deep-sea mineral resources. Then it is inevitable to grasp unsteady flow characteristics in air-lift pumps for safety operations of the systems. Therefore, the purpose of this study is to obtain safety operational conditions for air-lift pumps of lifting marine mineral resources such as manganese nodules from deep-sea floor to a mining ship. The numerical method was applied to an air-lift pump of 5, 000 m depth. In this paper, we discuss the unsteady flow characteristics of gas-liquid-solid three-phase flow in beginning and stopping of solid supply, in increasing and reducing of back-pressure, in fluctuating of solid supply, and reducing and returning of air supply from the viewpoint of practical techniques.

  371. Automatic Breaking System of Large Rocks by use of Force Sensors Peer-reviewed

    H.Takahashi, T.Monden

    Proc. of 30th International Symposium on Robotics 1 705-710 1999/10

  372. Fundamental Study on the Automation of Rock Breaking by Use of Force Sensors Peer-reviewed

    H.Takahashi, T.Monden

    Journal of the Mining and Materials Processing Institute of Japan 115 (10) 725-730 1999/10

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.115.725  

    ISSN: 0916-1740

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    The automation of breaking task of huge rocks consists of 1) automatic detection of huge rocks, 2) automatic control to make the breaker tip move to the surface of the huge rocks, and 3) carrying out the breaking task. In the previous study, the image processing to detect the huge rocks and to measure the three dimensional information of huge rock position were investigated. In this study, the algorithm to judge the breaking is proposed by use of force sensors. The strain gauges were attached on the chisel of the hydraulic breaker, and signals from the strain gauges were measured. Through the experiments of rock breaking, it was found that large compressive or tensile strain were obtained at the moment of rock breaking. The utilization of the neural network was proposed in this study to construct the algorithm to judge the rock breaking. It was confirmed that this algorithm works well from the experiments.

  373. Analysis of Resistive Forces Acting on the Bucket of LHD in the Scooping Task Peer-reviewed

    H.Takahashi, Y.Tsukamoto, E.Nakano

    Proc. of 16th International Symposium on Automation and Robotics in Construction 1 517-522 1999/09

  374. A Numerical Simulation of Unsteady Two-phase Gas-Liquid Flow in a Large-scale Air-lift Pump Peer-reviewed

    N.Hatakeyama, H.Takahashi, T.Saito, T.Masuyama

    J. of the Mining and Material Processing Institute of Japan 115 (6) 437-442 1999/06

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.115.437  

    ISSN: 0916-1740

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    It is anticipated that dynamical responses to changes of air supply become more complicated in a large-scale air-lift pump. Then it is inevitable to grasp unsteady flow characteristics in air-lift pumps for safety operations of the systems. Therefore the purposes of this study are to obtain safety operational conditions for air-lift pumps of lifting marine mineral resources such as manganese nodules from deep-sea floor to a mining ship. The numerical method was applied to an air-lift pump of 5,000 m depth. In this paper, we discuss especially the unsteady flow characteristics of gas-liquid two-phase flow in beginning and increasing of air supply, in increasing and reducing of back-pressure, and in stopping of air supply.

  375. Numerical Simulation of in-situ Cuttings Concentration Change due to Lost Circulation in Horizontal and Inclined Drilling Peer-reviewed

    H.Takahashi, S.Saito, T.Masuyama

    J. of the Mining and Material Processing Institute of Japan 115 (4) 219-225 1999/04

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.115.219  

    ISSN: 0916-1740

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    This paper describes the simulation model of in-situ cuttings concentration change due to lost circulation in horizontal and inclined drilling. The mixture flow of cuttings and mud fluid is regarded as the solid-liquid two-phase flow in the annulus and the numerical simulation model is developed based on the equation of motion of cuttings. The numerical simulation of in-situ cuttings concentration change due to lost circulation was carried out, and the simulated results were compared with the previous research related to the cuttings velocity change due to lost circulation. As simulated results agreed with the experimental results in the previous research, it was confirmed that the model developed here is reasonable. Therefore, by using this model, numerical simulation was carried out again under several conditions. From the simulated results, it was found that the effect of lost circulation on the change of in-situ cuttings concentration and height of moving bed becomes significant according to the decrease of the inclination angle of the drilling well.

  376. Analysis on the resistive forces acting on the bucket of a Load-Haul-Dump machine and a wheel loader in the scooping task Peer-reviewed

    H Takahashi, M Hasegawa, E Nakano

    ADVANCED ROBOTICS 13 (2) 97-114 1999

    ISSN: 0169-1864

    eISSN: 1568-5535

  377. Automatic system for boulder breakage using force sensors Peer-reviewed

    H. Takahashi, T. Monden

    Fragblast 3 (3) 267-277 1999

    Publisher: A.A. Balkema

    DOI: 10.1080/13855149909408050  

    ISSN: 1385-514X

  378. Pressure Drop of Gas-Liquid-Soild Three-Phase Flows with Stationary Bed in Horizontal Piles Peer-reviewed

    S.Liu, H.Takahashi, T.Masuyama, I.Matsuoka, X.Xu

    Proc. of the 2nd Japan-China Symposium on Slurry Transport Technology 2 37-42 1998/10

  379. Simulation of the Resistive Forces Acting on the Bucket of Wheel Loader by Use of DEM Peer-reviewed

    H.Takahashi

    Proc. of the 5th Asia-Pacific Regional Conference of Int. Society for Terrain Vehicle Systems 1 37-44 1998/10

  380. Autonomous Loading of Rocks by Use of Intelligent Loaders with a Vision System - A Concept of Autonomous Loading and Path Generation - Peer-reviewed

    Y.Konishi, H.Takahashi

    Proc. of the 5th Asia-Pacific Regional Conference of Int. Society for Terrain Vehicle Systems 1 413-420 1998/10

  381. Intelligent Drilling by Automatic Control of Position and Orientation of Drill Head of Crawler Drill Machine Peer-reviewed

    H.Suzuki, H.Takahashi

    Proc. of the 5th Asia-Pacific Regional Conference of Int. Society for Terrain Vehicle Systems 1 421-427 1998/10

  382. Study on Automatic Detection and Breaking System for Huge Rocks by Use of Image Processing - Obtaining the three dimensional information of huge rock position for breaking task - Peer-reviewed

    H.Takahashi, K.Sano, E.Nakano

    J. of the Mining and Materials Processing Institute of Japan 114 (8) 543-548 1998/08

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.114.543  

    ISSN: 0916-1740

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    In order to realize the automation of breaking task of huge rocks, it is necessary to detect the huge rocks and to make the breaker tip move to the surface of the huge rock automatically. In the previous study, the image processing procedure to detect the huge rocks was proposed. In this study, a method to obtain the three dimensional information of huge rock was investigated by using the laser spot light. A simple shape object was used instead of huge rocks to examine the accuracy of this measuring system. From the comparison between the estimated object position and actual position, it was found that this measuring system works well.

  383. Automatic Discharge System of Excavated Soils in a Vertical Sheild Machine Peer-reviewed

    H.Takahashi, J.Matsui, N.Hatakeyama, K.Tsuchiya

    Proc. of 5th International Conference on Automation Technology (CD-ROM) 1 1998/07

  384. Numerical Analysis of Unsteady Flow in a Air-Lift Pump for Lifting Solid Peer-reviewed

    N.Hatakeyama, H.Takahashi, T.Saito, T.Masuyama

    J. of the Mining and Material Processing Institute of Japan 114 (6) 415-420 1998/06

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.114.415  

    ISSN: 0916-1740

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    It is anticipated that a response of flow rates of lifting water and solid to a change of supplied air becomes complicated especially in a large-scale air-lift pump. Then it is inevitable to grasp unsteady flow in air-lift pumps for lifting solid in consideration of pipe blockage. In this work, a numerical method of unsteady flow was developed; discretized equations were derived by integration of the governing equations based on the drift flux model for gas-liquid-solid three-phase flow over the control volume, and numerical analyses were accomplished using the numerical procedure based on the so-called SIMPLER algorithm. To verify the present method, numerical results were compared with experimental results, which had been obtained with the air-lift system of 200 m depth. The present results show reasonable agreement with the experimental data. Hence the present method can be applicable to an examination of safety operation of air-lift systems.

  385. Automatic detection and breaking system for boulders by using of CCD camera and laser pointer Peer-reviewed

    Hiroshi Takahashi, Katsumi Sano

    Fragblast 2 (4) 397-414 1998

    Publisher: A.A. Balkema

    DOI: 10.1080/13855149809408785  

    ISSN: 1385-514X

  386. Automatic Detection and Breaking System for Large Rocks by Image Processing Peer-reviewed

    H.Takahashi, K.Sano

    Proc. of 4th Int. Symposium on Mine Mechanization and Automation 1 B1-27-B1-34 1997/07

  387. Estimation of Internal Condition in Piled Fragment Rocks by Use of Resistive Forces Acting on the Bucket of Wheel Loaders Peer-reviewed

    H.Takahashi

    Proc. of 14th Int. Symposium on Automation and Robotics in Construction 1 359-366 1997/06

  388. Study on Pressure Loss for Ice-Water Slurry Flows for District Cooling System Peer-reviewed

    H.Takahashi, M.Kato, K.Ishiguro, K.Watanabe

    Proc. of 7th Int. Conference on Thermal Energy Storage 2 757-762 1997/06

  389. Fundamental Study on the Resistive Force Acting on the Bucket during Scopping of Piled Rock Fragments Peer-reviewed

    H.Takahashi, Y.Tsukamoto, E.Nakano

    Trans. JSME (C) 63 (609) 1491-1497 1997/05

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaic.63.1491  

    ISSN: 0387-5024

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    In order to automate the scooping, it is desirable that the resistive force acting on the bucket is obtained before the scooping is performed. The objective of this paper is to derive theoretically the resistive force acting on the bucket during scooping of piled rock fragments. First, the changes in shape of the rock pile due to the penetration of it by the bucket are modeled. Based on this model, the resistive force acting on the bucket is considered theoretically. Finally, it was confirmed that the calculated results obtained using the model agree well with the experimental ones.

  390. Automatic Detection of Large Rocks by Image Processing Peer-reviewed

    H.Takahashi, K.Sano

    J. of the Mining and Material Processing Institute of Japan 113 (3) 169-174 1997/03

    Publisher:

    DOI: 10.2473/shigentosozai.113.169  

    ISSN: 0916-1740

  391. Effects of Several Factors on Flow Characteristcs of Air-lift Pumps for Deep-sea Mining Peer-reviewed

    N.Hatakeyama, H.Takahashi, T.Saito, T.Masuyama

    J. of the Mining and Material Processing Institute of Japan 113 (1) 22-28 1997

    Publisher:

    DOI: 10.2473/shigentosozai.113.22  

    ISSN: 0916-1740

  392. Penetration experiment of rocks by use of TBM roller bit with aiming the fast execution: Effect of bit shape Peer-reviewed

    H Takahashi, S Suzuoki, N Hatakeyama, S Nunomura, Y Shimizu

    ROCK STRESS 1 333-338 1997

  393. Fundamental Study on Automatic Loading of Soils to Dump Truck by Wheel Loader Peer-reviewed

    H.Takahashi, K.Okita

    Proc. of Japan Society of Civil Engineering 581 (581/VI-37) 145-154 1997

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.1997.581_145  

    ISSN: 0289-7806

    More details Close

    In this study, the control algorithm was investigated to carry out the automatic loading of soils to the dump truck from the wheel loader. A CCD camera was set on the loader and the image from the camera was processed to recognize the relative location between the dump truck and the loader. Through the experiment by using the dump truck model and loader model, it was confirmed that the algorithm proposed here works well.

  394. Estimation of the Amount of Rock Pile by Using Image Processing and Force Sensors and Task Planning of Shoveling Based on the Three Dimensional Shape of rock Peer-reviewed

    H.Takahashi, K.Yamazaki

    J. of the Society of Materials Engineering for Resources of Japan 10 (2) 32-40 1997

    Publisher: Akita University

    DOI: 10.5188/jsmerj.10.2_32  

    ISSN: 0919-9853

  395. Numerical Simulation of Bucket Trajectory Control in Autonomous Shoveling of Fragment Rocks by Using A Wheel Dozer Peer-reviewed

    Hiroshi TAKAHASHI, Yoshiaki TUKAMOTO

    Journal of JSCE 1996 (534/VI-30) 87-96 1996

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.1996.534_87  

    More details Close

    In this study, the structure of wheel dozen was modeled and kinematic analysis was carried out in order to achieve the autonomous shoveling of fragment rocks by the wheel dozer.<br>Through this study, oil rate provided to the hydraulic cylinder was derived in order that the backet tip may follow the desired trajectory. Furthermore, a PID control method was proposed by considering the unknown disturbance during the task. Consequently, it was confirmed that the bucket tip can be controlled to follow the desired trajectory, even if the disturbance is added in the control system.

  396. Study on Behavior of Particles in Gas-Liquid-Solid Three-Phase Flow in a Horizontal Pipe Peer-reviewed

    H.Takahashi

    Proc. of Hydraulic Engineering 40 825-830 1996

    DOI: 10.2208/prohe.40.825  

  397. Experimental Study on Deposit Velocity of Gas-Liquid- Solid Mixture Flows in a Horizontal Pipe -In the case of non-Newtonian fluids- Peer-reviewed

    H.Takahashi, S.Liu, T.Masuyama, I.Matsuoka

    Journal of the Mining and Materials Processing Institute of Japan 112 (7) 451-456 1996

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.112.451  

    ISSN: 0916-1740

    More details Close

    Deposit velocities of gas-liquid-solid mixture flows with non-Newtonian fluids in a horizontal pipe were experimentally investigated in this study. The following conclusions were obtained through this experiment.<BR>(1) When the volumetric flow rate of air is small, the deposit velocity in non-Newtonian fluids is smaller than that in Newtonian fluids. On the other hand, when the volumetric flow rate of air is large, the deposit velocity in non-Newtonian fluids is approximately equal to that in Newtonian fluids.<BR>(2) The effect of slurry density on the limit-deposit velocity is larger than that on the deposit velocity. That is, the limit-deposit velocity decreased with increasing the slurry density to a minimum at a certain slurry density. After that, the limit-deposit velocity increased with increasing the slurry density.<BR>(3) The deposit velocity decreased with increasing the volumetric flow rate of air and showed a minimum at a certain air rate. After it showed a minimum, the deposit velocity was almost constant regardless of the volumetric flow rate of air. On the other hand, the limit deposit velocity decreased rapidly with increasing the volumetric flow rate and showed zero at a certain air rate. At higher air rates, the limit deposit velocity was not observed. Furthermore, it was found that the deposit velocity was greater than the velocity at which the pressure loss shows a minimum for gas-liquid-solid mixture flows.

  398. Fundamental Study on Estimation of Internal Condition in Piled Fragment Rocks by Use of Resistive Forces Acting on the Bucket of Wheel Loaders Peer-reviewed

    H.Takahashi, Y.Namura

    Journal of the Mining and Materials Processing Institute of Japan 112 (8) 511-517 1996

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.112.511  

    ISSN: 0916-1740

    More details Close

    In order to automate the scooping task, it is desired that the resistive forces acting on the bucket are obtained in advance prior to the scooping task. Therefore, some models to predict the resistive forces acting on the bucket were proposed already. But, many parameters such as the friction coefficient between the bucket and the rocks, the angle of internal friction, slope of the rock pile and rock density are necessary to calculate the resistive force from these models. However, these parameters are generally unknown before the task. Therefore, the machine needs to obtain these parameters autonomously<BR>The purpose of this study is to obtain the friction coefficient between the bucket and the rocks, the angle of internal friction and particle diameters by using the resistive forces which are measured at the beginning of the task.<BR>In this study, the resistive forces were measured and the empirical equations to estimate the friction coefficient between the bucket and the rocks, the angle of internal friction and particle diameters were obtained. Furthermore, the method to judge the existence of huge rock in the pile was proposed by use of these equations.

  399. A Vision System for Recognition of Piled Fragment Rocks by Using Laser Slit Light and Images Peer-reviewed

    H.Takahashi, K.Yamasaki

    Journal of the Society of Materials Engineering for Resources of Japan 9 (2) 79-86 1996

    Publisher: Akita University

    DOI: 10.5188/jsmerj.9.2_79  

    ISSN: 0919-9853

  400. Numerical Simulation on Control of the Cutting Edge of the Scraper Peer-reviewed

    H.Takahashi, Y.Seyama

    Proc. of the 13th Int. Symposium on Automation and Robotics in Construction 1 587-596 1996

  401. A Stereo Vision System using Multi Slit Lights for Underground Vehicle Peer-reviewed

    Hiroshi Takahashi

    Proc. of the 2nd Asian Conference on Computer Vision 2 326-330 1995/11

  402. Estimation of Movement Length and Rotation Angle in Self Movement Trajectories by Using Laser Spots and Images Peer-reviewed

    H.Takahashi, H.Ito, T.Masuyama

    Journal of the Mining and Materials Processing Institute of Japan 111 (2) 83-91 1995

    Publisher:

    DOI: 10.2473/shigentosozai.111.83  

    ISSN: 0916-1740

  403. Three Dimensional Shape Measurement of Rocks by Using Multi Slit Lights and Stereo Vision-Fundamental study of vision system for exploitation machines- Peer-reviewed

    H.Takahashi, K.Tomonari, T.Masuyama

    Journal of the Mining and Materials Processing Institute of Japan 111 (11) 767-773 1995

    Publisher:

    DOI: 10.2473/shigentosozai.111.767  

    ISSN: 0916-1740

  404. Fundamental Study on Behavior of Excavated Soil in Shield Chamber of Slurry Shield Machine - Comparison of the Simulated Results of a Single Particle Behavior with one of Model Results - Peer-reviewed

    S.Sugiyama, H.Takahashi, T.Masuyama, Hitoshi Takahashi

    Proc. of Tunnel Engineering, JSCE 5 47-54 1995

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/journalte1991.5.47  

    ISSN: 1884-9091

    More details Close

    The purpose of his study is to carry out the numerical simulation of excavated soil in shield chamber of slurry shield machine. Numerically Lagrange method was adopted in this study. A trajectory of a single particle in the chamber was simulated and compared with one obtained in the model experiment. From the comparison, it was confirmed that simulated results agreed well with the expermented ones for small diameter particles.

  405. Analysis on Resistance Force on Bucket in the Scooping Operation of Piled Fragment Rocks Peer-reviewed

    Y.Tsukamoto, H.Takahashi

    Proc. of Tunnel Engineering, JSCE 5 55-62 1995

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/journalte1991.5.55  

    ISSN: 1884-9091

    More details Close

    The objective of this paper is to theoretically derive the resistance force acting on the bucket in the scooping operation of the piled fragment rocks. The first, the transforming process of the inside of piled fragment rocks was visualized by using tracer particles. Next, the tranceforming process was modeled simply based on the observation, and the resistance force was calculated. Finally, caluculated results were compared with experimental results. As a result, itwas comfirmed that the digging resistance force acting at the cutting edges was significant in the scooping opration.

  406. Resistance Force Acting on Bucket in Task of Shoveling of Piled Fragment Rocks Peer-reviewed

    H.Takahashi, Y.Tsukamoto

    Proc. of the 5th Symposium on Construction Robotics in Japan 1 19-26 1995

  407. Study on Searching, Detecting of Rock Pile and Model Experiment on Autonomous Shoveling of Rocks by Using Images Peer-reviewed

    H.Kamata, H.Takahashi

    Proc. of the 5th Symposium on Construction Robotics in Japan 1 27-36 1995

  408. Pressure Loss for Ice-Water Slurry Flows in Pipelines Peer-reviewed

    Hiroshi Takahashi, Miyoshi Kato, Mikio Sasaki, Toshio Kawashima, Tadashi Masuyama

    Japanese J.Multiphase Flow 9 (4) 308-315 1995

    DOI: 10.3811/jjmf.9.308  

    ISSN: 0914-2843

  409. Experimental Study on Deposit Velocity of Gas-Liquid- Solid Mixture Flows in a Horizontal Pipe Peer-reviewed

    H.Takahashi, S.Liu, T.Masuyama, I.Matsuoka

    Journal of the Mining and Materials Processing Institute of Japan 111 (12) 855-860 1995

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI: 10.2473/shigentosozai.111.855  

    ISSN: 0916-1740

    More details Close

    Deposit velocities of gas-liquid-solid mixture flows in a horizontal pipe were experimentally investigated in this study. The following conclusions were obtained through this experiment.<BR>(1) When the volumetric flow rate of air is small, both the deposit velocity and the limit deposit velocity were observed in gas-liquid-solid mixture flows. On the other hand, when the volumetric flow rate of air is large, only the deposit velocity was observed and the limit deposit velocity was not observed.<BR>(2) The velocity at which the pressure loss becomes minimum for gas-liquid-solid mixture flows was larger than the deposit velocity when the volumetric flow rate of air was small. However, when the volumetric flow rate of air was large, it was less than the deposit velocity.<BR>(3) The deposit velocity decreased with increasing the volumetric flow rate of air and showed minimum at a certain air rate. After that, the deposit velocity was almost constant regardless of the volumetric flow rate of air. On the other hand, the limit deposit velocity decreased rapidly with increasing the volumetric flow rate and showed zero at a certain air rate. After that, the limit deposit velocity was not observed.

  410. Numerical Simulation of In-situ Cuttings Concentration Change Due to Lost Circulation in Horizontal Drilling Peer-reviewed

    H.Takahashi, A.W.Iyoho

    Proc. of the 2nd International Conference on Multi Phase Flow '95 Kyoto 4 P8-91-P8-96 1995

  411. Autonomous Shoveling of Rocks by Using Image Vision System on LHD Peer-reviewed

    H.Takahashi, H.Kamata, T.Masuyama, S.Sarata

    Proc. of 3rd Int. Symposium on Mine Mechanization and Automation 1 33-44 1995

  412. Velocity Distributions in Solid-Water Mixture Flows in Pipe Peer-reviewed

    M.Sasaki, T.Kawashima, H.Takahashi

    Proc. of 2nd Asian Conference on Fluid Mechanics 1 1126-1129 1995

  413. CONCEPT AND MODEL EXPERIMENTS ON AUTOMATIC SHOVELING OF ROCKS FROM THE ROCK PILES Peer-reviewed

    H TAKAHASHI, H KAMATA, T MASUYAMA, S SARATA

    COMPUTERS & INDUSTRIAL ENGINEERING 27 (1-4) 43-46 1994/09

    ISSN: 0360-8352

  414. Fundamental Study on Task Planning for Automatic Shoveling of Piled Fragment Rocks by Using Images Peer-reviewed

    H.Takahashi, H.Kamata, T.Masuyama

    Proc. of the 4th Symposium on Construction Robotics in Japan 71-80 1994/07

  415. Model Analysis on Cuttings Transport in Horizontal Drilling Peer-reviewed

    H.Takahashi, T.Masuyama

    Proc. of the 5th Int. Symposium on Liquid-Solid Flows 1 155-160 1994/06

  416. Water Hammer in Coarse Solid-Liquid Two-Phase Flows Peer-reviewed

    H.Takahashi

    Proc. of Hydraulic Engineering 38 551-556 1994/03

  417. Model Analysis on the Bucket Control for Automatic Shoveling Peer-reviewed

    H.Takahashi, Y.Tsukamoto, H.Kamata, T.Masuyama

    Proc. of the 16th Int. Conf. on Computers and Industrial Engineering 1 47-51 1994/03

  418. Three Dimensional Measurement of Rocks Using Laser Spots and Digital Images -Fundamental Study of Vision System for Exploitation Machines- Peer-reviewed

    H.Ito, H.Takahashi, T.Masuyama

    Journal of the Mining and Materials Processing Institute of Japan 110 (6) 505-509 1994

    Publisher:

    DOI: 10.2473/shigentosozai.110.505  

    ISSN: 0916-1740

  419. Water Hammer Phenomena in Coarse Solid-Liquid Two-Phase Flow in a Pipe Peer-reviewed

    H.Takahashi

    Proc. of the 3rd JSME-KSME Fluid Engineering Conference 1 62-66 1994

  420. Velocity Distribution of Solid Particles in Solid-Water Mixture Flows in Pipeline Peer-reviewed

    M.Sasaki, H.Takahashi, T.Kawashima

    Proc. of Hydraulic Engineering 37 511-516 1993/02

    DOI: 10.2208/prohe.37.511  

  421. A Laboratory Study of Pressure Loss and Pressure Fluctuation for Ice-Water Slurry Flows in a Horizontal Pipe Peer-reviewed

    H.Takahashi, J.W.Wilson, T.Masuyama, M.Sasaki, T.Kawashima

    Proc. of the 12th Int. Conference on Slurry Handling and Pipeline Transport 1 497-510 1993

    Publisher:

  422. Experimental Study on Flow Characteristics and Head Loss Reduction by Air Injection for Coarse Particle Slurry Flows in a Horizontal Pipe Peer-reviewed

    T.Masuyama, H.Takahashi, N.Hatakeyama, H.Orikasa, S.Liu

    Proc. of the 12th Int. Conference on Slurry Handling and Pipeline Transport 1 581-592 1993

  423. Experimental Study of Snow-Water Mixture Flows in Horizontal Pipes Peer-reviewed

    T. Kawashima, M. Sasaki, H. Takahashi

    Proc. of the 12th Int. Conference on Slurry Handling and Pipeline Transport 1 525-533 1993

    Publisher:

  424. Dynamics of Snow-Water Flow in Pipelines Peer-reviewed

    M. Sasaki, T. Kawashima, H. Takahashi

    Proc. of the 12th Int. Conference on Slurry Handling and Pipeline Transport 1 535-543 1993

  425. Pressure Loss for Ice-Water Flows in a Horizontal Pipe Peer-reviewed

    H.Takahashi, T.Masuyama, T.Kawashima

    Proc. of the 7th Int. Conf. on Transport and Sedimentation of Solid Particles 45-55 1992/06

  426. Small Model Experiments on Automatic Loading of Rocks by a Shovel Dozor Peer-reviewed

    H.Takahashi, M.Okuda, S.Sarata, T.Masuyama

    Proc. of Hokkaido Geotechnics (3) 117-122 1992

  427. Three Dimensional Shape Estimation from Single View Image and Position Data by Ultrasonic Range Finder Peer-reviewed

    S.Sarata, H.Takahashi

    Proc. of Hokkaido Geotechnics (3) 129-134 1992

  428. A Vision System for Rock Surface Using Ultrasonic Range Finder and Image Processing Peer-reviewed

    H.Takahashi, K.Kobayashi, H.Ito, T.Masuyama, S.Sarata

    Proc. of the 9th Int. Symposium on Automation and Robotics in Construction 1 261-270 1992

  429. Experimental Study on Flow Characteristics of Ice-Water Slurries in a Horizontal Pipe Peer-reviewed

    H.Takahashi, T.Masuyama, T.Kawashima

    Journal of the MMIJ 108 (5) 357-363 1992

    DOI: 10.2473/shigentosozai.108.357  

  430. Flow Characteristics of Snow-Water Mixtures in Horizontal Pipes Peer-reviewed

    M.Sasaki, T.Kawashima, H.Takahashi

    Proc. of the 2nd Int. Conf. on Snow Engineering 1 301-312 1992

  431. Image Information Processing for Understanding the Circumstance of Underground - Understanding the Information for Local Position of Rocks from Images - Peer-reviewed

    H.Takahashi, K.Kobayashi, T.Masuyama

    Proc. of 2nd Symposium on Robotics in Consturction 1 71-76 1991/07

  432. STABILITY-CRITERION FOR THE SURFACE OF THE DEPOSIT BED OF SOLID-LIQUID FLOWS IN HORIZONTAL PIPES Peer-reviewed

    H TAKAHASHI, T MASUYAMA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 24 (3) 319-325 1991/06

    DOI: 10.1252/jcej.24.319  

    ISSN: 0021-9592

  433. Solid Concentration Distribution in Snow-Water Two-Phase Flow in a Pipe Peer-reviewed

    H.Takahashi, M.Sasaki, T.Kawashima

    J. Snow Engineering 7 (3) 18-27 1991

    Publisher: Japan Society for Snow Engineering

    DOI: 10.4106/jsse.7.3_18  

    ISSN: 0913-3526

    More details Close

    This paper concerns with the solid concentration distribution in snow-water two-phase flows in a horizontal pipe. The solid concentration distribution was theoretically investigated, based on a diffusion equation of solid particles. In order to confirm the validity of the model, the measurement of solid concentration distribution was conducted. At lower velocities, solid particles concentrated in the upper region, and not dispersed in the lower region of the pipe. At higher velocities, particles dispersed uniformly overr the cross section of the pipe, and solid concentration distribu-tions were approximately flat.<BR>The calculation on solid concentration distributions from this present model were compared with the experimental ones. The agreements were satisfactory.

  434. Flow Properties for Slurries of Particles with Densities Close to That of Water Peer-reviewed

    H.Takahashi, T.Masuyama, T.Kawashima

    Proc. of the 1st ASME-JSME Fluid Engineering Conference 118 103-108 1991

  435. Stochastic Analysis on the Motion of Particles in a Solid-Liquid Flow with a Deposit Bed in a Horizontal Pipe Peer-reviewed

    H.Takahashi, H.Matsui, T.Masuyama, T.Kawashima

    International Conference on Multiphase Flow, Tsukuba '91 2 133-136 1991

  436. Study on water hammer in coarse solid-liquid two-phase flow in a pipe Peer-reviewed

    Hiroshi Takahashi, Seiji Kiryu, Tadashi Masuyama

    Shigen to sozai 106 (2) 71-76 1990

    DOI: 10.2473/shigentosozai.106.71  

    ISSN: 0916-1740

  437. Cone-and-plate viscometry of casson fluids and Herschel-Bulkley fluids Peer-reviewed

    Tadashi Masuyama, Toshio Imai, Hiroshi Takahashi, Toshio Kawashima

    Shigen to sozai 106 (6) 337-340 1990

    DOI: 10.2473/shigentosozai.106.337  

    ISSN: 0916-1740

  438. Fundamental study on hydraulic transport of snow and ice particles. Drag coefficient of ice particles Peer-reviewed

    Hiroshi Takahashi, Tadashi Masuyama, Toshio Kawashima

    Shigen to sozai 106 (9) 514-520 1990

    DOI: 10.2473/shigentosozai.106.514  

    ISSN: 0916-1740

  439. Fundamental Study to Estimate the in-situ Solid Concentration Profile for Solid-Liquid Flows by Video Image Processing. Peer-reviewed

    H.Takahashi, H.Matsui, T.Masuyama

    Journal of the Mining and Materials Processing Institute of Japan 106 (13) 793-797 1990

    DOI: 10.2473/shigentosozai.106.793  

  440. Effects of Fine Particle Concentration on Pressure Fluctuation in Solid-Liquid Flow - Study on Pressure Fluctuation in Solid-Liquid Flow (5th Report) -. Peer-reviewed

    H.Takahashi, S.Kiryu, T.Masuyama

    Japanese J. of Multiphase Flow 4 (4) 284-306 1990

  441. Fluctuations of in-situ Solid Concentration and Pressure in Solid-Liquid Flow - Study on Pressure Fluctuation in Solid-Liquid Flow(4th Report) -. Peer-reviewed

    H.Takahashi, S.Kiryu, T.Masuyama

    Japanese J. of Multiphase Flow 4 (3) 192-209 1990

  442. Scale-Up Method of Pressure Loss in Solid-Liquid Two-Phase Flow Peer-reviewed

    H.Takahashi, Y.Cui, T.Masuyama, T.Kawashima

    Proc. of Hydraulic Engineering 34 559-564 1990

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/prohe.34.559  

    ISSN: 0916-7374

    More details Close

    This paper concerns with the scale-up method of pressure loss in coarse solid-liquid two-phase flow in horizontal pipes. In general, for economic reasons, the transport velocity is determined in the range of the flow with a moving bed. Therefore, the published data on the flow with a moving bed were analyzed, and an empirical equation to scale up the pressure loss (method I) was obtained. It was confirmed that calculated results agreed with the experimental ones within 30%. Furthermore, a scale-up method of pressure loss (method II) was established based on the moving bed model. This method gave the accurate estimations of pressure loss. However, it involves two unknown variables, so the experiments have to be conducted using two different kinds of pipes. The previous method for fine particles (so called is method) was modified to be applicable regardless of the particle diameter (method III).

  443. Study on the motion of particles in a solid-liquid two-phase flow in a horizontal pipe Peer-reviewed

    Hiroshi Takahashi, Kengo Takamizawa, Tadashi Masuyama

    Shigen to sozai 106 (1) 21-28 1990

    DOI: 10.2473/shigentosozai.106.21  

    ISSN: 0916-1740

  444. Analysis on Snow-Water Mixture Flow in a Horizontal Pipe by Three-Layer Model. Peer-reviewed

    H.Takahashi, M.Sasaki, T.Kawashima

    J. Snow Engineering 5 (4) 3-15 1989/12

  445. A Consideration on Limit Deposit Velocity -Study on Scale-Up of Flow Behavior of Settling Slurries in Horizontal Pipes (1st Report). Peer-reviewed

    K.Noda, Y.Cui, T.Masuyama, H.Takahashi, T.Chida

    Journal of the Mining and Materials Processing Institute of Japan 105 (13) 987-993 1989/11

    DOI: 10.2473/shigentosozai.105.987  

  446. UNSTABLE FLOW OF A SOLID LIQUID-MIXTURE IN A HORIZONTAL PIPE Peer-reviewed

    H TAKAHASHI, T MASUYAMA, K NODA

    INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 15 (5) 831-841 1989/09

    DOI: 10.1016/0301-9322(89)90044-X  

    ISSN: 0301-9322

  447. Flow Model of Snow-Water Two-Phase Flow in Pipes. Peer-reviewed

    H.Takahashi, M,Sasaki, T.Kawashima

    J. Snow Engineering 5 (2) 2-17 1989/06

    Publisher: Japan Society for Snow Engineering

    DOI: 10.4106/jsse.5.2_2  

    ISSN: 0913-3526

    More details Close

    In order to imitate the transport of snow in a pipe and to compare the calculated results of the pressure loss with the experimental results, some experiments were made by using the two kinds of polystyrene particles because the specific gravity of these particles was as same as the one of ice particles.<BR>The test sections consisted of transparent acrylic pipes with 49.7mm i.d. and the pressure loss was measured by a manometer.<BR>The coefficients of the pressure loss were calculated from Eq.(2). They showed the nega-tive values at high velocities even though the value of the specific gravity was larger than unity, and this result is the same as the one obtained by Shirakashi et al.<BR>The results of the pressure loss were analyzed by three models, that is, Bingham flow model, Shook model and Moving bed flow model. The calculated values of the coefficients of the pressure loss by using these models were in good agreement with the experimental results.<BR>However, these models have merits and demerits respectively, and they are listed in Table 2.

  448. Flow Behavior and Pressure Fluctuation in Solid- Liquid Flow - Study on Pressure Fluctuation in Solid-Liquid Flow(3rd Report) - Peer-reviewed

    H.Takahashi, S.Ishihara, T.Masuyama, K.Noda

    Japanese J. of Multiphase Flow 3 (1) 31-49 1989/03

  449. Characteristics of Pressure Fluctuation in Solid-Liquid Flow in Horizontal Pipes Peer-reviewed

    H.Takahashi, T.Masuyama, K.Noda

    International Conference on Hydraulic Transport of Solids by Pipelines 1 333-358 1988/10

  450. Effects of Solid Concentration and Particle Diameter on Pressure Fluctuation - Study on Pressure Fluctuation in Solid-Liquid Flow (1st Report) - Peer-reviewed

    H.Takahashi, T.Masuyama, K.Noda

    Japanese J. of Multiphase Flow 2 (1) 51-60 1988

  451. Characteristics of Pressure Fluctuation in Enterance Region - Study on Pressure Fluctuation in Solid-Liquid Flow(2nd Report) - Peer-reviewed

    H.Takahashi, S.Ishihara, T.Masuyama, K.Noda

    Japanese J. of Multiphase Flow 2 (2) 137-150 1988

  452. Analysis on Flow Behavior of Snow-Water Two-Phase Flow in Pipes Peer-reviewed

    T.Kawashima, H.Takahashi, M.Sasaki

    J. Snow Engineering (8) 3-11 1988

  453. On application of maximum entropy principle to analysis of pressure fluctuation in solid-liquid flow Peer-reviewed

    Hiroshi Takahashi, Tadashi Masuyama, Karoku Noda

    Nihon Kogyokaishi 104 (1210) 897-901 1988

    DOI: 10.2473/shigentosozai1953.104.1210_897  

    ISSN: 0369-4194

  454. On Pressure Loss of the Flow with a Moving Bed - Study on Behavior of Particles in Solid-Liquid Two-Phase Flow in Horizontal Pipes(5th Report) - Peer-reviewed

    H.Takahashi, T.Masuyama, K.Noda

    Journal of the Mining and Materials Processing Institute of Japan 103 (1188) 101-107 1987

    Publisher:

    DOI: 10.2473/shigentosozai1953.103.1188_101  

    ISSN: 0369-4194

  455. On Pressure Loss of the Flow with a Stationary Bed - Study on Behavior of Particles in Solid-Liquid Two-Phase Flow in Horizontal Pipes(3rd Report) - Peer-reviewed

    K.Noda, H.Takahashi, T.Kawashima

    Journal of the Mining and Materials Processing Institute of Japan 101 (1168) 363-368 1985

    Publisher:

    DOI: 10.2473/shigentosozai1953.101.1168_363  

    ISSN: 0369-4194

  456. On Saltation Length and Saltation Height of a Saltation Particle Abo e the Stationary Deposit Bed-Study on Behavior of Particles in Solid-Liquid Two Phase Flow in Horisontal Pipes (2nd Report)- Peer-reviewed

    K.Noda, H.Takahashi, T.Kawashima

    Journal of the Mining and Materials Processing Institute of Japan 101 (1167) 295-301 1985

    Publisher:

    DOI: 10.2473/shigentosozai1953.101.1167_295  

    ISSN: 0369-4194

  457. On Mechanism of Movement of Particles for Heterogeneous Flow with Moving Bed-Study on Behavior of Particles in Solid-LIquid Two Phase Flow in Horizontal PIpes(4th Report)- Peer-reviewed

    H.Takahashi, K.Noda, T.Kawashima

    Journal of the Mining and Materials Processing Institute of Japan 101 (1173) 713-717 1985

    Publisher:

    DOI: 10.2473/shigentosozai1953.101.1173_713  

    ISSN: 0369-4194

  458. Relation between Behavior of Particles and Pressure Loss in Horizontal Pipes Peer-reviewed

    K.Noda, H.Takahashi, T.Kawashima

    International Conference on Hydraulic Transport of Solids by Pipelines 1 191-205 1984/09

  459. On Mechanism of Movement of Particles for Flow with Stationalry Drposit Bed -Study on Behavior of Particles in Solid-Liquid Two Phase Flow in Horizontal Pipes(1st Report)- Peer-reviewed

    K.Noda, H.Takahashi, T.Kawashima

    Journal of the Mining and Materials Processing Institute of Japan 100 (1158) 657-662 1984

    Publisher:

    DOI: 10.2473/shigentosozai1953.100.1158_657  

    ISSN: 0369-4194

Show all ︎Show first 5

Misc. 64

  1. The possibility for logarithmic transformation of excavating resistive force and visual information for grain size estimation of crushed rocks by bucket excavation

    里見知昭, 小林佑輔, 高橋弘

    テラメカニックス (44) 2024

    ISSN: 1345-644X

  2. Effect of clay content on force information in blade excavation

    鈴木涼平, LIU Xiaodong, 里見知昭, 高橋弘

    テラメカニックス (44) 2024

    ISSN: 1345-644X

  3. Evaluation of the relationship between force information acting on the sludge removal mechanism and soil liquidity index

    船木陸, 里見知昭, 高橋弘

    テラメカニックス (44) 2024

    ISSN: 1345-644X

  4. Effect of Clay Content on the Detection of Soil Failure Patterns during Bucket Excavation

    谷口直哉, 里見知昭, LIU Xiaodong, 高橋弘

    テラメカニックス (44) 2024

    ISSN: 1345-644X

  5. Summary and future development of estimating grain size of blasted and crushed rocks by bucket excavation toward realizing full automation in mining works

    里見知昭, 小林佑輔, 高橋弘

    資源・素材(Web) 2024 2024

  6. 砂質土地盤におけるコーン指数とバケットに作用する抵抗力の関係—Relationship between Cone Index and Resistive Force Acting on Bucket in Sandy Soil

    谷口 直哉, 劉 暁東, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 43 7-12 2023/07

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  7. 履帯車両における走行パラメータと砂質土地盤の関係性について—Relationship between Driving Characteristics Parameters in Crawler Vehicle and Sandy Ground Condition

    中尾 紘彰, 劉 暁東, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 43 35-40 2023/07

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  8. 砂質土地盤におけるコーン指数とブレード掘削抵抗力の関係—Relationship between cone index of sandy ground and excavating resistive force acting on the blade

    鈴木 涼平, 劉 暁東, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 43 1-6 2023/07

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  9. 粘着力を考慮した粒状体の非局所構成則の提案とその適用性検証—A nonlocal constitutive law for granular material considering cohesion force and its applicability verification

    劉 暁東, 鈴木 涼平, 里見 知昭, 高橋 弘

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編 28 347-352 2023/05

    Publisher: 日本計算工学会

  10. Study on the relationship between ground strength and mechanical properties during turning of a crawler vehicle

    吉田圭一郎, 里見知昭, 高橋弘

    日本実験力学会講演論文集 (23) 2023

    ISSN: 1346-4922

  11. ドローンを用いた土砂サンプリング装置の落下速度制御に関する研究—Study on Falling Speed Control of Automatic Soil Sampling Device

    井上 旬太郎, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 38 69-74 2018/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  12. 造粒物を用いた繊維質固化処理土の強度特性に関する研究—Study on Strength Characteristics of Fiber-Cement-Stabilized Soil Using Granular Material

    松島 昂汰, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 38 7-12 2018/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  13. 海底面掘削機械開発に関する基礎的研究 : 水中平板載荷試験装置の作製—Fundamental study on development of seabed excavating machine : Production of plate loading test apparatus under water

    島貫 寛生, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 38 31-36 2018/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  14. バケット掘削における抵抗力を用いた破砕堆積物の粒度推定に関する研究—Study on estimation of grain size of crushed rocks using resistive force by excavator bucket

    大澤 拓也, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 38 19-24 2018/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  15. 繊維質固化処理土工法による未利用泥土の築堤材への再資源化に関する研究—Study on recycling of unused high water content soil as banking materials

    緒方 和也, 里見 知昭, 高橋 弘

    テラメカニックス = Teramechanics 38 1-6 2018/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  16. 有機物を含む汚土(ヘドロ)の再資源化 (特集 2015建設リサイクル技術発表会 : 発表技術の紹介(6団体))

    高橋 弘, 森 雅人

    建設リサイクル 73 2-9 2015

    Publisher: 大成出版社

    ISSN: 1343-3539

  17. 分級と改良を用いたゴミ混じり津波堆積土砂の再資源化に関する試験施工

    高橋 弘, 泉 信也, 柴田 聡

    環境管理 = Environmental management 50 (12) 89-94 2014/12

    Publisher: 産業環境管理協会

    ISSN: 1340-2552

  18. Trial Construction on Recycling on Trash Mixture Tsunami Sludge by using Screening and Improvement

    34 107-112 2014/04

    Publisher: テラメカニックス研究会

    ISSN: 1345-644X

  19. Anticipation to New Multiphase Flow Engineering Corresponding to Disaster Restoration

    TAKAHASHI Hiroshi

    26 (2) 125-126 2012/06/15

    ISSN: 0914-2843

  20. Anticipation to The Japanese Society for Experimental Mechanics

    TAKAHASHI Hiroshi

    12 (1) 1-1 2012/03/28

    ISSN: 1346-4930

  21. 土質改良機を用いた生石灰攪拌混合による揮発性有機化合物汚染土壌の最適浄化システムに関する研究

    高橋 弘, 三浦 洋輔, 須藤 祐子, 橋本 久儀

    春季大会講演集. I, 資源編 19 (1) 149-150 2007/03/29

    ISSN: 1343-9898

  22. 汚染土壌処理機械における掘削土砂と薬剤の固液混合シミュレータの開発に関する研究

    高橋 弘, 丸橋 史和, 橋本 久儀

    春季大会講演集. I, 資源編 17 (1) 15-16 2005/03/28

    ISSN: 1343-9898

  23. 非拡散型高含水比泥土回収・脱水装置の開発に関する研究

    高橋 弘, 原田 幸宏, 須藤 祐子

    春季大会講演集. I, 資源編 17 (1) 13-14 2005/03/28

    ISSN: 1343-9898

  24. Heat Generation in Drill Bits under Simulated Drilling Conditions and Effects of Cooling by Fluid Circulation

    SUTO Y., YOSHIMOTO K., TAKAHASHI H.

    2004 A36 2004/11/20

  25. 故紙を混ぜて建設汚泥をリサイクル-繊維質固化処理土の強度特性と施工事例-

    H.Takahashi, M.Mori

    建設の機械化 651 (651) 28-33 2004/05

    Publisher: 日本建設機械化協会

    ISSN: 0285-5453

  26. 割岩作業の自動化に関する基礎的研究

    高橋 弘, 阿部 弾

    春季大会講演集. I, 資源編 16 (1) 65-66 2004/03/29

    ISSN: 1343-9898

  27. 繊維質固化処理土の地震対策用地盤材料としての可能性

    H.Takahashi

    月刊下水道 27 (5) 69-72 2004/03

    Publisher: 環境新聞社

  28. 建設機械知能化の現状と展望

    H.Takahashi

    建設の機械化 (647) 10-16 2004/01

  29. ゼロエミッションとコスト縮減 建設汚泥を再資源化するボンテラン工法

    T.Ishi, H.Takahashi

    月刊下水道 26 (8) 19-23 2003/08

    Publisher: 環境新聞社

  30. 軽量繊維質固化処理土の強度特性に関する研究

    高橋 弘, 森 雅人, 熊倉 宏治, 小谷 謙二, 大谷 雅之

    春季大会講演集. I, 資源編 15 (2) 232-233 2003/03/27

    ISSN: 1343-9898

  31. 建設混合廃材リサイクル処理機械の開発に必要な選別機能に関する基礎的研究

    高橋 弘, 中嶋 健太郎, 橋本 久儀

    春季大会講演集. I, 資源編 15 (1) 45-46 2003/03/27

    ISSN: 1343-9898

  32. 建設発生土・建設汚泥の再資源化処理-処理機械の構造と作用・効果について-

    H.Takahashi, M.Mori

    骨材資源 34 (136) 189-198 2003/01

    Publisher: 骨材資源学会

    ISSN: 0286-9179

  33. 油圧ブレーカによる大岩破砕の数値シミュレーション

    高橋 弘, 泉 亘, 金子 勝比古

    石灰石 (318) 29-38 2002/07

    Publisher: 石灰石鉱業協会

    ISSN: 0287-3761

  34. 大塊小割作業の自動化と岩石破砕の数値シミュレーション

    高橋 弘, 門傳 孝, 泉 亘

    資源・素材 2001 41-44 2001/09/24

    ISSN: 0919-7915

  35. パワーショベルによる掘削作業時の抵抗力解析

    水上 喬二郎, 高橋 弘

    資源・素材 2001 16-16 2001/09/24

    ISSN: 0919-7915

  36. オーバヘッド型ベッセル搭載LHDの機構に関する研究

    森川 康弘, 高橋 弘

    資源・素材 2001 15-15 2001/09/24

    ISSN: 0919-7915

  37. 岩石破砕の数値シミュレーション

    高橋 弘, 泉 亘

    一般発表(研究・業績発表)講演要旨集 2001 (1) 254-255 2001/03/01

    ISSN: 0919-293X

  38. 車体屈曲式移動ロボットの運動学について

    高橋 弘, 渡嘉敷 憲一郎

    石灰石 (309) 44-48 2001/01

    Publisher: 石灰石鉱業協会

    ISSN: 0287-3761

  39. 破砕堆積物自動認識のためのビジョンシステムに関する研究

    高橋 弘, 菅澤 努, 齋藤 清次

    資源・素材 2000 (2) 253-254 2000/10/03

    ISSN: 0919-7915

  40. ローダとタンプトラックの協調作業による鉱石積み込みて乍業の自動化に関する基礎的研究-ダンプトラックガローダに接近する場合-

    高橋 弘, 森川 康弘, 齋藤 清次

    資源・素材 2000 (2) 235-236 2000/10/03

    ISSN: 0919-7915

  41. 新立坑シ-ルド工法における排泥機構に関する研究

    高橋 弘, 松井 二郎, 齋藤 清次

    一般発表(研究・業績発表)講演要旨集 2000 (1) 63-64 2000/03/29

    ISSN: 0919-293X

  42. 掘削土砂リサイクル処理機械における混合容器内土砂挙動の解析

    高橋 弘, 渡嘉敷 憲一郎, 山中 勇人, 関野 聡, 橋本 久儀

    資源・素材 1999 (1) 299-300 1999/11/01

    ISSN: 0919-7915

  43. レーザースリット光と画像を用いた破砕堆積物認識のためのビジョンシステム

    高橋 弘, 山崎 勝幸

    一般発表(研究・業績発表)講演要旨集 1997 (1) 128-128 1999/03/25

    ISSN: 0919-293X

  44. バキューム方式による三相流輸送法の数値シミュレーション

    畠山 信夫, 高橋 弘, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1997 (1) 136-136 1999/03/25

    ISSN: 0919-293X

  45. 深海底鉱物揚鉱用エアリフトポンプにおける非定常流動の数値シミュレーション

    畠山 信夫, 高橋 弘, 齋藤 隆之, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1999 (1) 43-44 1999/03

    ISSN: 0919-293X

  46. 力覚を用いた大岩小割作業の自動化に関する実験的研究

    高橋 弘, 門伝 孝, 齋藤 清次

    一般発表(研究・業績発表)講演要旨集 1999 (1) 231-232 1999/03

    ISSN: 0919-293X

  47. クローラードリルによる削孔作業の自動化に関する基礎的研究

    高橋 弘, 鈴木 寛之, 齋藤 清次

    一般発表(研究・業績発表)講演要旨集 1999 (1) 233-234 1999/03

    ISSN: 0919-293X

  48. 立坑シールド工法における掘削土砂の排出に関する基礎的研究

    高橋 弘, 松井 二郎, 畠山 信夫, 土屋 清

    一般発表(研究・業績発表)講演要旨集 1998 (1) 94-94 1998/03/30

    ISSN: 0919-293X

  49. 破砕堆積物すくい取り作業時におけるバケットに作用する抵抗力に関する研究

    高橋 弘, 長谷川 稔, 中野 栄二

    一般発表(研究・業績発表)講演要旨集 1998 (1) 90-90 1998/03/30

    ISSN: 0919-293X

  50. 画像処理による大岩の自動検出・破砕システムに関する研究

    高橋 弘, 佐野 克己, 中野 栄二

    一般発表(研究・業績発表)講演要旨集 1998 (1) 6-9 1998/03/30

    ISSN: 0919-293X

  51. 大深度エアリフトポンプにおける非定常流動の数値シミュレーション

    畠山 信夫, 高橋 弘, 齋藤 隆之, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1998 (1) 166-166 1998/03/30

    ISSN: 0919-293X

  52. Flow Characteristics of Air-lift Pumps for Deep-sea Mining Using Enlargement Conveying Pipe and/or Back-pressure Device

    HATAKEYAMA Nobuo, TAKAHASHI Hiroshi, SAITO Takayuki, MASUYAMA Tadashi

    Journal of the Mining and Materials Processing Institute of Japan 113 (5) p.333-338 1997/05

    Publisher: 資源・素材学会

    ISSN: 0916-1740

  53. 画像を用いた大岩の自動検出に関する研究

    佐野 克己, 高橋 弘

    資源・素材 1996 (1) 95-95 1996/10/21

    ISSN: 0919-7915

  54. 拡大管を用いた深海底鉱物揚鉱用エアリフトポンプの流動特性

    畠山 信夫, 高橋 弘, 斎藤 隆之, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1996 (1) 74-74 1996/03/29

    ISSN: 0919-293X

  55. 泥水式シールドチャンバー内における堀削土砂の挙動に関する研究

    高橋 弘, 杉山 茂雄, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1996 (1) 84-84 1996/03/29

    ISSN: 0919-293X

  56. 積み込み機械による破砕堆積物のすくい取り作業における抵抗力について

    高橋 弘, 塚本 佳明

    一般発表(研究・業績発表)講演要旨集 1996 (1) 83-83 1996/03/29

    ISSN: 0919-293X

  57. 坑内地図情報を基にした開発機械の移動制御

    高橋 弘, 津田 真也, 益山 忠

    資源・素材 1995 9-12 1995/09/18

    ISSN: 0919-7915

  58. マルチスリット光と複眼視による岩盤・岩石の3次元形状計測 : 開発機械のビジョンシステムに関する基礎的研究

    高橋 弘, 友成 晃司, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1995 (1) 186-186 1995/03/28

    ISSN: 0919-293X

  59. 気液固三相流の堆積速度に関する研究

    益山 忠, 劉 双科, 畠山 信夫, 高橋 弘, 松岡 功

    一般発表(研究・業績発表)講演要旨集 1995 (1) 141-141 1995/03/28

    ISSN: 0919-293X

  60. バケット貫入時におけるずり山変形過程の可視化と力解析

    高橋 弘, 塚本 佳明, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1995 (1) 184-184 1995/03/28

    ISSN: 0919-293X

  61. 画像による破砕堆積物の探索・検出および自律すくい取り作業計画の構築

    高橋 弘, 鎌田 博之, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1995 (1) 185-185 1995/03/28

    ISSN: 0919-293X

  62. 坑内地図情報を基にした開発機械の移動制御に関する基礎的研究

    高橋 弘, 津田 真也, 益山 忠

    一般発表(研究・業績発表)講演要旨集 1995 (1) 187-187 1995/03/28

    ISSN: 0919-293X

  63. 水平管内氷水スラリ-の流動特性に関する実験的研究〔英文〕

    高橋 弘, 益山 忠, 川島 俊夫

    資源と素材 108 (5) p357-363 1992/05

    Publisher: 資源・素材学会

    ISSN: 0916-1740

  64. 水平管内固液2相流における粒子群の挙動に関する研究〔英文〕

    高橋 弘, 高見沢 健吾, 益山 忠

    資源と素材 106 (1) p21-28 1990/01

    Publisher: 資源・素材学会

    ISSN: 0916-1740

Show all ︎Show first 5

Books and Other Publications 1

  1. 履帯の設計工学-履帯設計と性能予測の基礎-

    伊藤 信孝, 高橋 弘他

    テラメカニックス研究会 2000/11

Presentations 21

  1. Robots and Applications International-presentation

    Int. Conference on Robotics and Applications 2000/08/14

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    (プロシーディング) Proc. of the IASTED International Conference on Robotics and Applications 2000 230 235

  2. Intelligent Machine Control and Machinery Design International-presentation

    5th International Conference on Automation Technology 1998/07/20

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    (プロシーディング) Proc. of 5th International Conference on Automation Technology 1998 B5-4/1 B5-4/6

  3. Penetration Experiment of Rocks by Use of TBM Roller Bit with Aiming the Fast Execution : Effect of Bit Shape International-presentation

    International Symposium on Rock Stress 1997/10/07

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    (プロシーディング) Proc. of the Int. Symposium on Rock Stress Balkema 1997 333 338

  4. Automatic Detection and Breaking System for Large Rocks by Image Processing International-presentation

    4th International Symposium on Mine Mechanization and Automation 1997/07/06

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    (プロシーディング) Proc. of the 4th Int. Symposium on Mine Mechanization and Automation 1997 B1-27 B1-34

  5. Study on Pressure Loss for Ice-Water Slurry Flows for District Cooling System International-presentation

    7th Int. Conference on Thermal Energy Storage 1997/06/18

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    (プロシーディング) MEGASTOCK'97 1997 757 762

  6. Estimation of Internal Condition in Piled Fragment Rocks by Use of Resistive Forces Acting on the Bucket of Wheel Loaders International-presentation

    14th Int. Symposium on Automation and Robotics in Construction 1997/06/08

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    (プロシーディング) Proc. of 14th Int. Symposium on Automation and Robotics in Construction 1997 359 366

  7. Numerical Simulation on Control of the Cutting Edge of the Scraper International-presentation

    13th Int. Symposium on Automation and Robotics in Construction 1996/06/11

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    (プロシーディング) Proc. of 13th Int. Symposium on Automation and Robotics in Construction 1996 587 596

  8. Infrastructure and Transportation International-presentation

    3rd International Conference on Snow Engineering 1996/05/26

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    (プロシーディング) Snow Engineering Recent Advances Balkema 1997

  9. Two/Three Dimensional Vision Ⅱ International-presentation

    2nd Asian Conference on Computer Vision 1995/12/05

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    (プロシーディング) Proc. of 2nd Asian Conference on Computer Vision 1995

  10. Autonomous Shoveling of Rocks by Uisng Image Vision System On LHD International-presentation

    The 3rd Int. Symposium on Mine Mechanization and Automation 1995/06/12

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    (プロシーディング) Proc. of 3rd Int. Symposium on Mine Mechanization and Automation 1995 33 44

  11. Numerical Simulation of In-situ Cuttings Concentration Change Due to Lost Circulation in Horizontal Drilling International-presentation

    2nd International Conference on Multiphase Flow 1995/04/03

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    (プロシーディング) Proc. of 2nd Int. Conference on Multiphase Flow 1995 P8-91 P8-96

  12. Water Hammer Phenomena in Coarse Solid-Liquid Two- Phase Flow in a Pipe International-presentation

    3rd JSME-KSME Fluid Engineering Conference 1994/07/25

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    (プロシーディング) Proc. of 3rd JSME-KSME Fluid Engineering Conference 1994 62 66

  13. Model Analysis on Cuttings Transport in Horizontal Drilling International-presentation

    5th Int. Symposium on Liquid-Solid Flows 1994/06/19

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    (プロシーディング) Liquid-Solid Flows 1994 ASME 1994 155 160

  14. Concept and Model Experiments on Automatic Shoveling of Rocks from the Rock Piles International-presentation

    16th Int. Conference on Computers and Industrial Engineering. 1994/03/07

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    (プロシーディング) Proc. of the 16th Int. Conf. on Computers andIndustrial Eng. 1994 48 51

  15. Model Analysis on the Bucket Control for Automatic Shoveling International-presentation

    16th Int. Conference on Computers and Industrial Engineering 1994/03/07

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    (プロシーディング) Proc. of 16th Int. Conference on Computers and Industrial Engineering 1994 44 47

  16. A Laboratory Study of Pressure Loss and Pressure Fluctuation for Ice-Water Slurry Flows in a Horizontal Pipe International-presentation

    12th Int. Conf. on Slurry Handling and Pipeline Transport 1993/09/28

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    (プロシーディング) Proc. of Hydrotransport 12 1993 497 510

  17. A Vision System for Rock Surface using Ultrasonic Range Finder and Image Processing International-presentation

    9th Int. Symposium on Automation and Robotics in Construction 1992/06/03

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    (プロシーディング) Proc. of 9th ISARC 1992 261 270

  18. Stochastic Analysis on the Motion of Particles in a Solid-Liquid Flow with a Deposit Bed in a Horizontal Pipe International-presentation

    1st Int. Conference on Multiphase Flow 1991/09/24

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    (プロシーディング) Proc. of the Int. Conf. on Multiphase Flows 1991 133 136

  19. Flow Properties of Slurries of Particles with Densities Close to That of Water International-presentation

    1st ASME-JSME Fluid Eng. Conf. 1991/06/23

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    (プロシーディング) Proc. of 1st ASME-JSME Fluid Eng. Conf. 1991 103 108

  20. Settling Slurry Flows in Pipes International-presentation

    1st Japan-China Symposium on Slurry Transportation Technology 1990/11/01

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    (プロシーディング) 1990 15 20

  21. Characteristics of Pressure Fluctuation in Solid- Liquid Flow in Horizontal Pipes International-presentation

    11th Int. Conf. on Hydraulic Transport of Solids by Pipelines 1988/10/19

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    (プロシーディング) Proc. of Hydrotransport 11 1988 333 358

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Research Projects 36

  1. Study on Recycling Machine of Several Wastes for Environmental Solutions Competitive

    2000/04 - Present

  2. Study on Recycling of High-Water Content Mud Competitive

    2000/04 - Present

  3. Fundamental Study on Geomechatronics Competitive

    1999/04 - Present

  4. Fundamental Study on Intelligence and Robotics of Exploitation Machinery Competitive

    1996/04 - Present

  5. Study on Elemental Technologies for the Development of Small Hand-Guided Sludge Removal Machine

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2025/03/31

  6. 被災地で発生する軟弱泥土の積極的再利用による迅速な復旧工法の提案

    高橋 弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 挑戦的研究(萌芽)

    Institution: 東北大学

    2019/06/28 - 2023/03/31

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    近年,豪雨による大規模自然災害が多発している.2011年8月に発生した台風23号による奈良県での大規模土砂崩落,2015年9月の関東・東北豪雨による鬼怒川の堤防決壊,2017年7月の秋田県雄物川の氾濫,2018年9月の台風21号による近畿地方を中心にした被害など枚挙に暇がない.これらの被災地では大量の軟弱泥土が発生するが,この軟弱泥土は被災地の復旧の妨げになる「厄介物」でしかない.そのため速やかに泥土を回収し,一定場所に運搬・排出することが災害に強い街づくりにとって極めて重要である.本研究では,紙おむつの製造工場から排出される廃棄水溶性ポリマーに注目した. 2020年度は,廃棄水溶性ポリマー混合による可搬性の詳細検討およびパーライト副産物を用いた泥土改良について実験的に検討した.ポリマー添加直後はフロー値が小さく,十分な可搬性を示したが,添加量が少ない場合,経過日数とともにフロー値が増大することが確認された.パーライト副産物はパーライトを製造する際に排出される副産物であり,粒度が小さく多孔性であるため,軟弱泥土改良に非常に有効であり,改良土の強度も十分に大きくなることが確かめられた. 2021度は,泥土を廃棄ポリマー,セメント,古紙破砕物などを用いて再資源化し,生成土の強度特性,耐久性について実験的に検討した.吸水性ポリマーの混合量を段階的に変化させた改良土の一軸圧縮試験の結果からは,吸水性ポリマーの混合によって破壊強度が低下する結果が得られたが,セメント系固化材などの改良材の配合条件を改良前の土の含水比やコンシステンシーなどと関連付けて一般化することができれば,吸水性ポリマーを含む改良土であっても十分に建設用土砂として活用できる可能性が示された.

  7. Study on Development of Non-Adhesive Excavating Bucket based on Ring-shaped organisms

    TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    In this study, a new mechanism to reduce the soil adhesion on the excavating bucket was proposed. In order to reduce the soil adhesion, the water seeps out from many holes of bucket surface through porous media because it was confirmed that the water film formed between soils and the surface of materials reduced the soil adhesion. It was found that the minimum water addition was 0.05g/cm2 for clay soil. Furthermore, it was confirmed through several experiments that the minimum water addition was 0.06g/cm2 regardless of the soils.

  8. Development of Continuous Sludge Improvement Machine for Disaster Sites by using Fiber-Cement-Stabilized Soil Method and Application of Improved Sludge to Environmental Restoration

    Takahashi Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2013/04/01 - 2017/03/31

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    Generally, a large amount of sludge is generated in the disaster sites, and usually this sludge becomes an obstacle for prompt restoration. In this study, a continuous sludge recycling system was proposed to contribute the prompt restoration of disaster sites. This system can recycle the sludge in the disaster sites and produce the high quality ground materials. In this study, several elements technologies of the system were investigated and then a machine model of continuous sludge improvement was made. By using this model, the usefulness of proposed system in this study was experimentally investigated.

  9. Reserch on clarification of river bank erosion of Saigon River and proposal of its countermeasure

    FUKAGAWA Ryoichi, TAKAHASHI Hiroshi, SATOFUKA Yoshifumi, JOHN CRAIG Wells, FUJIMOTO Masamitsu, SAKO Kazunari, BUI Ha Hong, LUU Xuan Loc, HUYNH Thanh Son

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Ritsumeikan University

    2011/04/01 - 2014/03/31

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    This project was carried out to make clear the bank erosion of Saigon River. At first some test fields were set and the SPT, soil sampling and a series of laboratory tests were conducted to clarify the ground profile and the basic mechanical properties of soils at the fields. Then the water level, the distribution of the flow velocities and the cross section shape of the river bed were observed by use of ADCP, a measurement device using ultrasonic wave. Reserch on countermeasure for prevention of river bank erosion was also carried out. Firstly some conditions to make good improved soil were investigated by using common materials in Vietnam. Next some numerical simulations were conducted to investigate the effective reinforcement countermeasure. The Japan/Vietnam joint-seminars were held four times to share the above reserch results each other.

  10. Study on Development of non-cohesive material based on the structure of insect cuticle and its application for heavy machines

    TAKAHASHI Hiroshi, ISHIDA Hideki, SUTO Yuko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2010 - 2012

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    Roughness and contact angle were measured for several metal materials with various surface roughness and some insects such as beetles, lethocerus deyrollei, diving beetle were measured. Moreover, a device to measure the adhesion rate of soils were manufactured and the adhesion rate of soils was measured. In a result, it was found that the peak parameter which is the representative parameter in the vertical direction of roughness is a key factor, and the adhesion rate of soils increased with increasing this peak parameter.

  11. Development of low cost quake-resistive ground materials by integrating several wastes and its application for Environmental Restoration

    TAKAHASHI Hiroshi, FUKAGAWA Ryoichi, SUTO Yuko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2010 - 2012

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    It was confirmed that rice straw crushed by the mixer with wet condition can be used as a substitute of paper debris. Fiber-cement-stabilized soils were made by using the crushed rice straw and cyclic test for drying and wetting and submerged jet erosion test were carried out by using Fiber-cement-stabilized soils with crushed rice straw. In a result, it was found through these tests that Fiber-cement-stabilized soils have high durability for drying and wetting and high durability for erosion. Furthermore, a simulation model to estimate the strength characteristics of Fiber-cement-stabilized soils.

  12. Study on Micro-Restructuring of Rocklike Materials

    KANEKO Katsuhiko, TAKAHASHI Hiroshi, IGARASHI Toshifumi, SATO Tsutomu, MURATA Sumihiko, KAWASAKI Satoru, ITO Mayumi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Hokkaido University

    2007 - 2009

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    A series of experimental studies for the micro-restructuring of rocklike materials has been carried out. Various techniques to improve the physical properties of rocklike materials by reconstructing their microstructures have been developed, i.e., a method to change the rock strength by controlling of micro-cracking, a grout technique using microorganisms, a sealing technique using mineral separation from the ground water and so on.

  13. Development of Eco-Friendly Functional Ground Materials by New Recycling Method for Unused High Water Content Mud

    TAKAHASHI Hiroshi, FUKAGAWA Ryoichi, TATEYAMA Kazuyoshi, SUTO Yuko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2007 - 2008

  14. Studies on the applicability of the compact mining system in Mongolia and Central Asia

    YAMATOMI Jiro, ADACHI Tsuyoshi, KANEKO Katsuhiko, SARATA Shigeru, SHIBAYAMA Atsushi, TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: The University of Tokyo

    2005 - 2007

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    During the term from the fiscal year of 2005 till 2007, we have organized a group constituted by academic professions and supported by mining engineers and studied on "the applicability of the compact mining system in Mongolia and Central Asia". After the disintegration of the Soviet Union, Mongolia and the Central Asian countries introduced privatization and foreign investment in order to accelerate economic growth. While a couple of large scaled mines having developed, medium to small scaled deposits, especially compact ones, are left undeveloped. The developing countries are usually suffering from the scarcity of infrastructures and capital accumulations; even though the size of development of a compact mine is small, but the social and economic impact of the compact mine could be large and in some cases may lead to develop a larger deposit around the compact deposit. The scale merit of mining operation is broadly recognized in the sector of mineral industries. The larger the scale of operation, the more profit must be recoverable from a massive mineral deposit with lower grade. Against the conventional recognition, the compact mining system may make an appeal the advantage of small scaled mining, i. e., the flexibility of small operations may reduce a variety of risks. On the other hand, large mine developments and operations accompanying huge investments may be more vulnerable to risks in developing countries because of lack of social capitals and infrastructure. The success of the compact mining system can be endorsed by the Japanese mining engineering cultivated in and know-how having been stored by her medium to small scaled mining. In addition, mechanization, automation, information technologies should be incorporated in the compact mining system, which is characterized by a compact and consistent system from exploration to production with preference development of higher grade ore body and environment concerned development. The following are the key technologies for the compact mining system studied in the applicability of the system in Mongolia and Central Asia. ・Narrow Vein Mining ・Paste Backfilling Technology ・Highwall Mining System ・Mobile Mineral Processing System ・Mine Project Evaluation by Real Option Analysis

  15. Fracturing Design Method based on the Fractal Fracture Mechanics

    KANEKO Katsuhiko, HIRATA Atuo, TAKAHASHI Hiroshi, KAWASAKI Satoru, IGARASHI Tosifumii, KATO Masaji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: HOKKAIDO UNIVERSITY

    2004 - 2006

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    1. The application of a microscopic strength distribution and the fracture process zone can enable representation of the rock fracture process from micro-to macro-scales under an applied load. From these considerations, we proposed a fracture process analysis based on the Fractal Fracture Mechanics. In this analysis, the microscopic strength is modeled by Weibull' s distribution function and the inelastic behavior in the fracture process zone by a strength softening curve. The proposed fracture process analysis was perfomed for various applied pressures to investigate the influence of an applied pressure waveform on dynamic fracture process in rock. 2. From the results of the DT tests and crack path analysis, it was shown that the crack density and preferred orientation of the pre-existing microcracks affected the crack growth behavior. The difference between the activation energies of subcritical crack growth in rock are caused by the preferred orientation of the pre-existing microcracks. 3. A micro focus X-ray CT system was used to visualize the 3-dimensional microstructure of a rock specimen used in the dynamic tension test based on the Hopkinson's effect. Numerous cracks that do not coalesce to form a single fracture plane were observed and the multi-crack growth predicted by the Fractal Fracture Mechanics is confirmed. Furthermore, microstructures of Bentnite-Quartz Mixtures and Fiber-Cement-Stabilized Soils were observed and discussed

  16. Study on Recycling of unused high water-content mud as lightweight landfill materials

    TAKAHASHI Hiroshi, INOUE Chihiro, SUTO Yuko, TATEYAMA Kazuyoshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2004 - 2005

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    1. Investigation on Fiber-cement-stabilized method (1), Several kinds of high water-content mud were sampled from several construction sites, and basic physical properties of the mud were investigated. Furthermore, optimum mixing rate of paper debris and chemical agents were examined. (2), Modified soils improved by the method proposed here were sampled from several locations of the mixing pool and the content of paper debris was measured by making the thin section. It was found that if the mixing and agitation was carried out fully and carefully, the unevenness of the paper debris was quite small. 2. Investigation on the durability of Fiber-cement-stabilized mud (1), It was confirmed through repeated cycle test for drying and wetting that the durability of the fiber-cement-stabilized mud was much higher than that of the cement-stabilized mud produced by the conventional method. (2), It was confirmed through repeated cycle test for freezing and thawing that the durability of the fiber-cement-stabilized mud was much higher than that of the cement-stabilized mud produced by the conventional method. 3. Study on utilization of the modified soils as lightweight landfill materials The theoretical equations to estimate the density and water content of the fiber-cement-stabilized mud were derived and the new recycling system was proposed. Furthermore, the trial calculation was carried out on the economic effect in the case that the fiber-cement-stabilized mud was used as landfill materials. In the result, it was confirmed that the reduction of the construction cost is possible. 4. Study on utilization of paper sludge The utilization of paper sludge as a substitute of paper debris was investigated. It was confirmed through the unconfined compression test and repeated cycle test for drying and wetting that the paper debris can be used as the substitute of paper debris. Moreover, it was confirmed that if the paper sludge is used instead of paper debris, large cost reduction is possible. 5. Estimation of the ability as vegetation soils The Fiber-cement-stabilized mud is lightweight, the utilization as vegetation soil on the rooftop will be possible. Therefore, water holding properties was examined. It was confirmed that the water holding properties of the fiber-cement-stabilized mud are much higher than the commercially produced artificial vegetation soils. Therefore, as the vegetation soils can be produced from the waste sludge, the construction cost of rooftop gardening is much reduced.

  17. Development of a borehole temperature simulator to optimize operation of high-temperature well drilling

    TAKAHASHI Hiroshi, HATAKEYAMA Nobuo, SUTO Yuko, NIIBORI Yuichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    2002 - 2003

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    In this research, a useful borehole simulator was developed to know borehole temperature and to select an optimum drilling condition while, drilling high-temperature formation. In addition, the adaptability of the simulator to high-temperature formation drilling was discussed, compared with field data. A special borehole simulator was developed. Using the simulator, you can simulate borehole condition corresponding to a series of work at drilling site. You can input various drilling parameters to the simulator, and can get the returned mud temperature, the bottomhole temperature, and so on. Some field data were selected to compare with simulated data. The field data were mud logging data, mud circulation test data and temperature recovery test data from a high-temperature oil well and a geothermal well. Results showed that simulated values relatively agreed with measured value from these test. This indicates that you can estimate borehole temperature to a certain extent while high temperature drilling. It was also suggested that properties of non-Newtonian fluid at high temperature was needed to be more clear in order to much accurate the simulator.

  18. Fragmentation controlled blasting

    KANEKO Katsuhiko, TAKAHASHI Hiroshi, IGARASHI Tosifumii, OGATA Yuji, KATO Masaji, KAWASAKI Satoru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: HOKKAIDO UNIVERSITY

    2002 - 2003

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    (1) The dynamic fracture process in Hopkinson's test was analyzed using proposed finite element method to verify the strain-rate dependency of dynamic tensile strength. It is clarified that the strain-rate dependency is due to the stress concentration and redistribution mechanism in the rock. The rock inhomogenety also contributed to the strain-rate dependency. (2)The fracture process in one free-face rock was analyzed to investigate the fracture pattern and its mechanism. It was cleared that the fracture process as well as the fracture pattern were affected by the applied pressure-rate. The transition between quasi-static and dynamic fracture process can be estimated by the non-dimensional time defined by the propagation velocity, the burden and rise time of the applied pressure. (3)A numerical simulation method, coupled the finite element arid the finite difference calculation, to analyze the multiple fracture propagation due to stress waves and the detonation gas is developed. It is confirmed that the detonation gas considerably affects the generation and propagation of the fractures and that he numerical gas-propagation velocity along the fractures approximately agrees with that obtained by the laboratory experiments. It is concluded that the gas velocity along the fracture in bench blasting is lower than the air sound velocity except for the vicinity of the blast hole. (4)A method to predict the fragment size distribution in bench blasting using numerical and image analyses was proposed. In this method, the fracture process in bench blasting was analyzed using proposed FEM and fragment size distribution was evaluated by the image analysis of FEM result. (5)Rock fragmentation in bench blasting was examined using proposed method and the influence of blast condition on fragmentation was clarified. It is recognized that the widely spaced blast pattern is effective to reduce the bolder in fragments. Furthermore, it is pointed out that the optimal fragmentation in the field with respect to delay time depends strongly on the gas flow through the fractures caused by the stress wave.

  19. Study on Kinematics and Locomotion Control of Articulated Steering Type Autonomous Mining Robots

    TAKAHASHI Hiroshi, SAITO Seiji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    2000 - 2001

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    PURPOSE : The purpose of this study is to investigate the autonomous locomotion method of moble mining robots theoretically and experimentally. The mobile mining robots are divided into two types, that is wheeled type and tracked type. Therefore, in this study, the kinematics of wheeled and tracked robots is investigated. Furthermore, the advantages of the articulated steering tracked vehicles are confirmed through the numerical simulation and model experiments. RESULTS : (1) Analysis on Kinematics of Articulated Steering Wheeled Vehicles Kinematics of articulated steering wheeled vehicles was analyzed and wheel velocity, steering angle and steering angular velocity, which are necessary for the wheeled vehicles to follow the desired path, were theoretically derived. (2) Analysis on Kinematics of Articulated Steering Tracked Vehicles Kinematics of articulated steering tracked vehicles was analyzed. The advantages of articulated steering method for tracked vehicles was confirmed through the numerical simulations. (3) Autonomous Mobile Experiments by using Wheeled Vehicle Model In order to confirm the results of numerical simulations, the articulated steering wheeled and tracked vehicle models were designed and manufactured. The autonomous mobile experiments were carried out by using the vehicle model, and it was confirmed through these experiments that the tracking point to follow the desired path should be set on the front unit of articulated vehicles. Furthermore, the control method to follow the desired path was proposed. (4) Autonomous Mobile Experiments by using Tracked Vehicle Model In order to confirm the advantages of articulated steering tracked vehicle, the tracked vehicle model was manufactured and autonomous mobile experiments were carried out. It was confirmed through these experiments that the tracking point to follow the desired path should be set on the front unit of articulated vehicles. Furthermore, the control method to follow the desired path was proposed. (5) Experiments on Automatic Loading Automatic loading method of crushed ores by the wheel loader into the vessel of the dump truck was proposed. It was confirmed through the experiment by using the wheel load model and dump track model that the proposed method worked well.

  20. Development of Automatic System for Boulder Breakage by Sensor Fusion Technique

    TAKAHASHI Hiroshi, KANEKO Katsuhiko, SAITO Seiji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: TOHOKU UNIVERSITY

    2000 - 2001

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    PURPOSE: The purpose of this study is to investigate the autonomous locomotion method of mobile mining robots theoretically and experimentally. The mobile mining robots are divided into two types, that is wheeled type and tracked type. Therefore, in this study, the kinematics of wheeled and tracked robots is investigated. Furthermore, the advantages of the articulated steering tracked vehicles are confirmed through the numerical simulation and model experiments. RESULTS: PURPOSE: The purpose of this study is to investigate flie automatic system for boulder breakage by using force sensors and image processing. Furthermore, the fracture development in the boulder by impacting of hydraulic breaker is also investigated. RESULTS: (1) Design and Manufacturing the Hydraulic Breaker Model The hydraulic breaker model of 3 degrees of freedom was designed and manufactured. Strain gauges were used as force sensors and they were attached beside the chisel. (2) Detection of the Sliding of Chisel Before impacting the boulder, the chisel pushes the boulder to keep it stable. The algorithm to detect the chisel sliding while pushing the boulder was proposed by using the measured strain data. (3) Obtaining the strain data in the boulder breakage experiments The strain data while impacting the boulder was measured by the strain gauges attached beside the chisel. The algorithm to detect the boulder breakage was proposed by using the measured strain data. (4) Obtaining the image data of boulder breakage The vision sensor (CCD Camera) was attached in the hydraulic breaker model and images of boulder before and after impacting were obtained. The algorithm to confirm the boulder breakage was proposed by using these images. (5) Automatic System for Boulder Breakage by using Force Sensors and ImageProcessing The first, boulder breakage was judged by the force sensors because it is possible to carry out the real time judgment. If the above algorithm judges that the boulder is not broken, then this result was confirmed by the image processing. It was confirmed that this judgmentalgorithm worked well. (6) Numerical Simulation of Boulder Breakage Numerical simulation of boulder breakage was carried out by using Distinct Element Method (DEM). The fracture development in the boulder by impacting was well simulated.

  21. Fracture Mechanics for Heterogeneous Materials and its Application to Controlled Blasting and Splitting

    KANEKO Katsuhiko, TAKAHASI Hiroshi, HIRATA Atsuo, YONEDA Tetsuro, KATO Masaji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: HOKKAIDO UNIVERSITY

    2000 - 2001

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    Although the rock is generally considered to be a heterogeneous material, the rock is usually treated as a homogeneous material in the fracture mechanics. In this study, the influence of heterogeneity on the crack growth in rock was analyzed and discussed. (1) Double-Torsion test was performed to investigate the anisotropy of subcritical crack growth behavior in granite that is a typically heterogeneous rock. The experimental results confirmed that subcritical crack growth in granite was anisotropic and depended on the direction of the crack growth. Furthermore, the geometry of crack path becomes smoother in the case that the crack propagates with lower stress level. These behavior and characteristics are caused by the oriented microcracks. From these results, it is concluded that the crack growth in heterogeneous rock takes place with lower fracture energy by linking of mierocracks existing nearby crack tip. (2) Mineralogical examination, physical properties measurement and slake durability tests of some argillaceous clastic rocks have been carried out and it was made clear that the mineral composition and texture of rocks in addition to smectite mineralogy have a great influence in rock durability. (3) A numerical simulation method based on the finite element method and fracture mechanics for heterogeneous rock was proposed. Analyzing fracture processes of rock splitting by the breaker and rock fragmentation in bench blasting, the mechanism of splitting and fragmentation were clarified.

  22. Development of District Air-Cooling System using Ice-Water Flows Competitive

    1994/06 - 2000/03

  23. 地下深部未利用資源開発のためのジオメカトロニクス技術の高度展開に関する研究

    高橋 弘, 建山 和由, 深川 良一, 金子 勝比古

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東北大学

    2000 - 2000

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    目的:地下深部に賦存する未利用資源・エネルギーの有効利用のためには,如何に安全に,かつコストを抑えて賦存地点まで到達し,効率的に開発するかが重要なポイントになり,そのための新たな地殻マシーニング技術の開発が望まれている.「ジオメカトロニクス」は,岩盤・地盤工学,機械工学,電子工学を融合させた,本研究で提案する新たな造語であり,本研究では「ジオメカトロニクス」の学問体系の基礎を構築する要素を調査するとともに,次世代地殻マシーニング技術の確立に必要な要素技術および課題を洗い出し,共同研究へ発展させるための調査研究を行うことを目的とする. 研究結果: ・第1回現地研究会を,住友大阪セメント(株)唐沢鉱業所にて開催し,重機の稼動状況を調査するとともに,自動化クローラドリルによる自動削孔の様子を見学し,今後の自動化技術に関して聞き取り調査を実施した.また重機のロボット化への問題点を全員で検討し,作業環境の認識技術および土砂・岩盤の原位置物性値計測技術が,次世代地殻マシーニング技術に必要不可欠であることを確認した. ・第2回現地研究会を地下資源開発現場である豊羽鉱山(札幌市)で開催し,地下の作業現場に導入されている重機の稼動状態を調査した.本現場の岩盤温度は100度以上あることから,高温岩盤の掘削技術について全員で検討を行った. ・第3回現地研究会を雲仙普賢岳普及作業現場で開催し,無人化重機による作業状況を調査した.オペレータの方からの聞き取り調査により,遠隔操作は必ずしも十分に作業員の負担軽減にはなっていないこと,また知能化ロボットの期待が大きいことを確認した. ・第4回研究会を東京で開催し,今までの検討結果を総括するとともに,共同研究に発展させるための検討を行った.

  24. Improvement of Nondestructive Structure Imaging for Rock by X-ray Computed Tomography

    SUGAWARA Katsuhiko, SHIMADA Hideki, TAKAHASHI Hiroshi, KANEKO Katsuhiko, OTANI Jyun, OBARA Yuzo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kumamoto University

    1998 - 1999

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    X-ray Computed Tomography is a nondestructive imaging technique, which makes it possible to evaluate the attenuation of X-ray at each point within materials, by digitizing shadow pictures taken from various directions and subsequent image reconstruction. This technique was applied to geo-materials, and the improved software and experimental technique were presented for the image processing of the fluid migration in rock, the stain localization in soil, the crack opening profile within rock and so on. In regard to the fluid migration, a simple percolation experiment using a disc specimen of rock was proposed to measure the coefficient of permeability, along with the subtraction of serial images and the local region averaging technique, and the theory for interpreting the experimental results. With respect to the stain localization in soil and sand, the local deviation of CT values was newly utilized to evaluate the fragmentation mechanism, together with the pertinent smoothing and the subsequent grey-level thresholding of three dimensional serial images. With regard to the visualization of fracture around the cavity such a spherical cavity and a disc-shaped cavity, the combination of zooming and perspective drawing was clarified to be effective for the investigation of fracture propagation mechanism. In regard to the crack opening profile within rock and concrete, a new scheme named the Crack Projection Method was presented to evaluate the aperture distribution along crack by means of the image subtraction and the regional averaging technique.

  25. Study on the Discharge System of Excavated Soils in a Vertical Shield Machine

    TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    1997 - 1998

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    PURPOSE : In order to construct the space or tunnel in the deep underground, a large diameter vertical shaft is necessary to carry the excavation machines. Usually, large iron boards are penetrated into the ground around the shaft and the inside surrounded by the boards is excavated by power shovels or other machines. However, this method requires a long construction term and much costs. On the other hand, horizontal shield machines have been used widely to construct the horizontal tunnel, and they are already operated automatically. Therefore, if the automation technology of horizontal shield machine is applicable to the construction of a vertical shaft, the construction term and cost will be much reduced. However, the significant difference between the horizontal shield machine and vertical shield machine is the discharge system of the excavated soils. Since the direction of excavation coincides with the one of gravity in the vertical shield machine, a new mechanism to collect the excavated soils is necessary. Therefore, the purposes of this study are to investigate the collecting method of excavated soils and to propose an automatic discharge system of excavated soils in a vertical shield machine. RESEARCH PLAN : 1) Measurement of jet extension by use of a fixed cutter spoke 2) Measurement of jet velocity profiles by using tracer particles 3) Observation of excavated soil behavior 4) Theoretical consideration of the jet and excavated soil velocity profile 5) Theoretical consideration of similarity between actual machine and small scale model 6) Measurement of jet and excavated soil behavior by use of the small scale model RESULTS : 1) It was confirmed that the jet extension decreases with increasing the flow rate and cutter spoke inclination. The effect of bit shape and clearance was negligible small. 2) It was found that the behavior of excavated soils is nearly linear and most of the soils are transported by the central flows of the dispersed water jets. Therefore, it was confirmed that the central flows of the dispersed water jet are the most significant factor to design the actual machine. 3) The equation of motion of excavated soils was theoretically obtained based on the energy equation of open channel flows. 4) The theoretical consideration on the similarity was carried out, and the scale of the vertical shield machine model was determined. 5) It was found that the effect of rotation of cutter spoke on the behavior of excavated soils was very small because the RPM of the cutter spoke was not high.

  26. 地下資源開発用自律移動型知能機械の設計・模型試作および掘削に関する模型実験

    高橋 弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1995 - 1995

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    1.研究目的:開発機械に関して各要素ごとに検討されてる知能化のための要素技術を1つのシステムに統合し、これを基に地下環境下で掘削・運搬作業を自律的に行う知能機械システムについて検討することを目的としている。 2.研究計画:(1)実験の基礎となる模型を試作する。駆動用モータとしてDCサーボモータを用い、視覚用にCCDカメラを設置する。(2)破砕堆積物の探索実験を行い、作業対象物の有無の判断を行うエキスパートシステムを構築する。(3)カメラを用いて作業対象物の形状を把握し、作業計画をたてるアルゴリズムについて検討する。(4)レーザスポットを用いて作業対象物までの距離を計測する。(5)実際に掘削作業を行う。 3.研究成果:(1)破砕堆積物を含む多くの画像をサンプリングし、画像中に含まれるエッジの密度等を基に、破砕堆積物の存在の有無を判断するエキスパートシステムを構築した。このエキスパートシステムを用いて別の画像について判断の成功率を求めた結果、模型から破砕堆積物までの距離に制限があるものの、ほぼ100%判断できることが確かめられた。(2)距離計測に関しては、カメラの光軸とレーザスポットの光軸を平行にさせたビジョンシステムを模型上に設置し、スポット点をカメラにより検出することにより距離を瞬時に計測するシステムを構築した。(3)模型が破砕堆積物の直前まで移動してから作業計画をたてる際には、新たに堆積物の形状を把握し、その形状を基に最適な計画をたてる必要がある。画像から特徴点を抽出する際には、エッジ検出を用いたが、対象物の形状が複雑なため、不必要な数多くのエッジが検出されたり、また完全に閉じたエッジを得ることはまず不可能である。そこれ、これについてはしきい値を導入したアルゴリズムを考え、破砕堆積物の概略を得る方法を検討した。この画像を基に最適な掘削作業を行うモードと通常の繰り返しによるモードとを比較検討した結果、画像により毎回の作業ごとに最適な計画をたてることにより効率の良い作業が可能であることが確かめられた。(4)積み込み作業を自動的に行うためには、バケットに作用する力の解析が必要不可欠であることから、抵抗力について理論的に検討し、抵抗力を定式化した。

  27. 資源開発用自律移動型知能機械のビジョンシステムに関する研究

    高橋 弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1994 - 1994

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    1.研究目的:地下資源および地下空間を開発する場合、劣悪な環境からの作業員の解放を目指して、ロボットの導入が試みられている。このロボットには自律移動性が期待されており、これを実現するためには作業対象物の認識は不可欠である。本研究では、画像による岩石の3次元形状計測および自己移動軌跡の推定について検討することを目的とする。 2.研究計画:2台のカメラを用いて複眼視を構成し、さらにレーザスポットを照射して強制対応点を設け、領域を分割して三角測量における相関計算の時間を減少させる。さらにおよびレーザスポット2点を用いて、移動形態を判別し、画像照合により移動距離、回転角の推定を行う。 3.研究成果:複眼視による形状計測では、強制対応点を設けることにより領域が分割され、偽対応点の減少および計算時間の短縮が可能となった。さらに、マルチスリット光を用いるとさらに処理時間を減少させることが可能となることが確かめられた。移動軌跡の推定に関する実験では、2点のレーザスポットの輝点の位置を検出することにより、直進あるいは回転の移動形態を判別することが可能となった。直進距離については、レーザスポット光の輝点を用いて三角測量の原理で容易に算出された。回転角度の推定については、回転の幾何学形状を基に推定式を算出した。実際の推定では、初めに画像に微分処理を施し、得られたエッジをXおよびY軸方向に斜影し、斜影ベクトルの照合により画像の移動量を求め、この値を推定式に代入して回転角を得た。計算値と設定値とを比較した結果、両者はほぼ一致することが確かめられた。

  28. 超音波ドップラー・ボアホールテレビューアによる地下き裂透水性の定量的映像化

    新妻 弘明, 浅沼 宏, 高橋 弘, 佐藤 源之

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1994 - 1994

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    本研究は坑壁におけるき裂の透水性を定量的に映像化できる新しい計測法の開発のための学術的基礎を確立することを目的としている。本研究では1〜5MHz帯凹面トランスジューサを用いた,反射法による坑壁の超音波映像法(BHTV)において,坑井内流体の後方散乱によるドップラー効果を利用し,坑壁に垂直な坑井内流体の流れを検出して,その流速分布からき裂の位置ならびに透水量を定量的に映像化する計測手法を考究した。具体的には,以下の研究を行った。 1.坑壁からき裂への流体の流れとドップラーシフト分布との関係の検討:坑井内の3次元流速分布と測定されるドップラーシフトとの関係を理論的に求めるとともに室内実験によりそれを実測した。 2.坑井内流体の超音波後方散乱特性とドップラー強度との関係の検討:ベンドナイト泥水による後方散乱特性を実測し,ドップラー計測のために十分な散乱特性を有することを明らかにした。 3.定量評価法の理論的検討:測定されるドップラーシフトの2次元分布から,き裂に浸透する流体の流量を定量的に評価する方法を理論的に検討するとともに,室内実験により検証した。 4.ドップラー計測方式の検討:以上の結果をもとにドップラー計測方式について検討を行ない,パルスドップラー法が適していることを明らかにした。 5.計測装置の試作:パルスドップラー法による信号の検出方法,信号処理法を具体的に検討し,測定システムを試作した。その結果流量を定量的に測定できるシステムを実現した。 以上の結果,パルスドップラー法によるBHTV計測によりき裂透水性の定量的映像化が可能ことが明らかになるとともに,計測システムの具体的構成法ならびに信号処理法を明らかにすることができた。

  29. 流雪溝の設計方法

    佐々木 幹夫, 高橋 弘, 今村 文彦

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 重点領域研究

    Institution: 八戸工業大学

    1991 - 1992

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    (1)流雪構および融雪溝の布設路線数・延長距離は年々増加傾向にある。青森県では年平均8箇所、約5kmの布設距離となっている。 (2)近年、融雪溝の設置が増大している。 (3)幅、底勾配の急変箇所、急曲部箇所数が年々増加傾向にある。特に、急曲部の箇所の増加が著しい。 (4)流雪溝や融雪溝の送雪能力よりもその能力に応じた運用方法の確立が重要となる。 (5)曲がりや勾配変化等は町域の形、流雪溝の配置形状、地形等によって定まり、どうしても避け難い状況にある。こうした弱点箇所が、全体の作業能率を落とさない為に、どの様に設計されなくてはならないかは極めて重要な問題となっている。 (6)現地調査により、構造的原因に関して流雪溝の閉塞状況を3箇所について把握し、勾配により閉塞箇所が異なることが示された。 (7)室内実験により、流雪溝屈曲部の閉塞の有無を雪塊の接近速度・硬さ・大きさの3項目により分類した。雪塊が屈曲部を通過するときに破壊される体積に着目し、雪塊の持つ運動エネルギとの関係から流雪溝屈曲部での閉塞条件を用いて、条件を1つにまとめることができた。連続して流れる雪塊を考え、その送雪能力を導きQ_W/Q_S≒4〜5であることを示した。 (8)流雪溝内の雪混じり流れをダイレタント性の流れとしてモデル化し、平均流速式を導いた。 (9)雪水二相流の流動現象についての観測をポリスチレン粒子を用いて行った結果、断面内の速度分布は水平方向にはほぼ一様となっているが、鉛直方向には大きく変化する分布となっていることが明らかとなった。

  30. 流雪溝の設計方法

    佐々木 幹夫, 高橋 弘, 今村 文彦

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 重点領域研究

    Institution: 八戸工業大学

    1991 - 1991

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    1、北海道から北陸に至る7市2町をモデル都市として選定し,現行流雪溝の運用状況と問題点を整理した。青森県内の各市町村の流雪溝諸元(流量,水路勾配,幅,急変箇所数,運用状況)調査を実施し、現行流雪溝の特性を抽出した。この結果、利用条件が気象、水理,地形,街区都市化進行状況でまとめられることが明らかとなり,流雪溝の設計条件の分類をした。 2、水路屈折部の雪塊流動現象および停滞・閉塞現象を室内実験で観測し,水路屈曲部における雪塊流動機構を検討した。これにより、屈折部を有する流雪溝の送雪能力推定式を提案した。 3、雪水二相流管内流動の観測を室内実験により行った。その結果、以下の点が明らかとなった。(1)乱流による圧力変動は低速域では清水の圧力変動とほぼ同じであり,高速域では清水の圧力変動よりも小さくなる。(2)雪塊の代わりにポリスチレン粒子(比重0.97,1.04)を用いての流動観測により,低速域では上層に浮遊集積層、下層に、沈降集積層ができるためにエネルギ-損失は清水時よりも大きく,高速域では固体粒子が断面全体に広がるために清水時のエネルギ損失とほぼ同一となる。また、この観則により、管内混相流の固体粒子速度の分布形が解明された。 4、排雪限界と流雪溝の設計条件に関する検討の結果,街区の条件によっては、水路の高さが排雪限界量を決めてしまう場合があり,この点の設計条件を明確にする必要があることがわかった。 本研究の目的達成には、今後,(1)曲部・断面変化部の流雪能力の推定式およびその実験的検討,(2)雪水混相の乱流抵抗則,(3)直線部排雪限界と必要最低水深および雪塊投雪時の抵抗則を明らかにする必要がある。

  31. Flow Analysis on Solid-Liquid Two-Phase Flows by Using the Image Processing

    MASUYAMA Tadashi, HATAKEYAMA Nobuo, TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Tohiku University

    1989 - 1990

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    1. Objective : In designing a hydraulic transport system of solid particles through pipelines, the pump capacity is generally determined, based on the pressure loss for slurries. The pressure loss is closely related to the particle behavior in pipelines. Therefore, this research objective is to obtain a large quantity of data on the particle behavior by using the image processing, and to stochastically investigate the particle behavior. 2. Approach : in order to approach the above mentioned objective, the following phases were organized. (1) Measurement and estimation of solid concentration profiles by the shutoff method and by the image processing technique. (2) Lagrangian analysis on the behavior of tracer particles by the image processing technique. (3) Measurement of the pressure loss for air-solid-liquid three phase flows. 3. Results : (1) The threshold values to conduct the thresholding were determined by analyzing the video image of O-12 overlapping particles. The solid concentration profiles were estimated by the image processing technique using the above threshold values, and were compared with the experimental results. It was confirmed that the agreement was satisfactory. (2) It was found that the Probability Density Function (PDF) of saltation length and height had two peaks, and these were corresponded to the behavior of rolling・sliding and saltation of particles. The modelling of the motion of saltating particles was conducted, and the simulation on particle behavior was performed. The simulated PDF of the saltation length and height approximately agreed with the experimental ones. (3) The pressure loss reduction for air-solid-liquid three phase flows was observed in the vicinity of the critical velocity, and it was confirmed that the pressure loss was predicted by the two-layer model.

  32. Study on Manganese Nodule hydrolifting system with the cooperation of air-lift pump and jet pump

    MASUYAMA Tadashi, HATAKEYAMA Nobuo, TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Developmental Scientific Research

    Institution: TOHOKU UNIVERSITY

    1988 - 1989

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    1. OBJECTIVE : This research objective is to develop a manganese nodules hydrolifting system with the cooperation of air-lift pump and jet pump, and consequently to contribute to the manganese nodules recovery system. 2. APPROACH : In order to approach the above mentioned objective, the following phases were organized. (1) A numerical simulation for the lifting characteristics for water with an air-lift pump. (2) Introduction of basic equations for gas-liquid-solid three phase flows. (3) Establishment of a method to classify the flow patterns of the three phase flows in a vertical pipe. (4) Investigation on the lifting characteristics for water under the cooperation of air-lift pump and jet pump. 3. RESULTS : (1) In order to appreciate the lifting characteristics for water with the air-lift pump with the numerical simulation, it is necessary to obtain the correlations concerning with the drift velocity and the ratio of the pressure loss for gas-liquid flows to the one for liquid flows. As the results of this simulation, the presented simulation proved to be accountable for the experimental results which were obtained through the apparatus with a 200m length lifting pipe at National Research Institute for Pollution and Resources. (2) One dimensional basic equations for three phase flows were presented with taking into account the radial distribution of the material mass elements. In application of these equations, the constructive equations were also required, which included the parameters such as drift velocity, mass distribution, wall shear stress and heat flux. (3) Three phase flows in a vertical pipe were classified by means of the relationship between the probability density distribution function of differential pressure fluctuations and flow patterns. It is demonstrated from this above relationship that a single-peak distribution and a bi-peak distribution indicate the bubble flow and the slug flow, respectively. This difference among these distributions enables to objectively classify the flow patterns. (4) The lifting characteristics for water under the cooperation of air-lift pump and jet pump were experimentally investigated, and the effects of the connecting order of these pumps on the characteristics was examined. As a results, it was confirmed that the system of air-lift pump-jet pump achieved higher efficiency in the lifting characteristics for water than the one of jet pump-air lift pump.

  33. Basic Study on Cuttings Discharge from Large, Deep Bore Holes Under High Speed Water Jet Cutting

    MASUYAMA Tadashi, TAKAHASHI Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1987 - 1988

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    1. OBJECTIVE: This research objective is to get some achievements concerning cuttings discharge from large, deep bore holes through the studies on the velocity profile in confined jets, on the solid particles behavior in confined impinging jet flow resion, on the dynamic pressure distribution on the center line in the region, on the solid particle velocity of solid-liquid two phase flow in vertical annular pipes and on the estimation of solid concentration in tubes by imagen processing. 2. APPROCH: Experimental studies on the velocity profile in confined jets, on the solid particles behavior in the region, on the dynamic pressure distribution on the center line in the region, on the solid particle velocity of solid-liquid two phase flow in the pipes and on the estimation of solid concentration in the tubes by image processing and theoretical research on the solid velocity in the pipes are projected to achieve the objective. 3. RESULTS: (1) The non-dimensional total pressure in confined jets which have no secondary flow i.e. (P_t-P_<tmin>)/(P_<tmax>-P@>D2tmin@>D2) is a function of non-dimensional distance i.e. Y/Y_b and has similarity in pressure profiles.(2) The non-dimensional dynamic pressure profile similarity and the non-dimensional velocity reduce similarity on the center line in confined impinging jets are observed in the same flow pattern. (4) It is found that the non-dimensional beginning length of impingement region in confined impinging jets is shorter than the one in impinging jets. (5) It is found that the confined impinging jets take solid particles into themselves in the developing flow region and the particles in confined impinging jets, the nozzle of which is not set in co-axial, are easier to flow into the annular pipes than the ones in confined impinging jets, the nozzle of which is set in co-axial. (6) It is found from the theoretical analysis based on one dime ntional flow model that the ratio of solid particle velocity to mean velocity in solid-liquid frow in vertical annular pipes is affected by drag coefficirnt, mean velocity, pipe ratio and specific gravity. The theoretical results of the velocity ratio are in approximate agreement with experiment ones. (7) It is found through the studies on the estimation of solid concentration in tubes by image processing that the most suitable threshold value for crushed rocks in solid-liquid two phase flow in tubes is 188 in the case that the gray level is divided into 216.

  34. Snow Drain System with Open Channels and Pipes.

    SASAKI Mikio, TAKAHASHI Hiroshi, KAWASHIMA Toshio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: Hachinohe Institute of Technology

    1987 - 1988

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    This is the fundamental study on hydraulic transport of snow block from an urban area to the river through open channel and pipeline system. In present study, Several investigations on the flow behavior of snow-water mixtures in open channels and pipes were made experimentally and theoretically. The experiment was carried out by using a transparent acrylic pipes of 5 cm, in which the snow block and two kinds of polystyrene particles of diameter d=3.21mm and 3.09mm with densities near that of the snow block were used to investigate headloss and particle velocity. And then theoretical analysis on the flow of snow-water mixtures was made by using the plug flow model and the dilatant fluid concept. The results are as follows; 1) The negative values are obtained in the experiments of the perssure loss in the range of higher velocities. 2) In the range of lower velocities, a layer of higher solid concentration is generated in upper region in pipes like moving bed. Velocities of solid particles in that region become lower due to the higher solid concentrations. 3) The theory of the flow of the snow-water mixtures has been extended. The mathematical model of snow-water mixtures in the range of the lower velocities is expressed by the turbulent flow, the plug flow and the dilatant flow models in the lower, middle and upper regions in pipes, respectively. And then the theoretical model of snow-water mixtures in the range of the higher velocities is expressed by the turbulent flow and the plug flow models. The velocity distributions given by present models are in good agreement with the experimental ones.

  35. Study on Pressure Fluctuation of Coarse Slurry Flow in Pipes

    NODA Karoku, TAKAHASHI Hiroshi, MASUYAMA Tadashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1986 - 1987

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    (1)OBJECTIVE: This research objective is to get some siginificant fruits for designing coarse slurry pipeline system from the study on the characteristics of pressure fluctuations in solid-liquid flow in horizontal pipes, especially, on the effects of coarse solid concentration, particle diameter and fine particle additive concentration on the pressure fluctuations in entrance and fully developed region, the relation between the particle behavior in pipes and the pressure fluctuations and on application of MEP to the pressure fluctuations in solid-liquid flow in pipes. (2)APPROCH: In order to achieve the objective, the measurement of pressure fluctuations in coarse slurry flow in horizontal pipes, the measurement of velocity and its fluctuation profile of solid and liquid in the flow and an experimental study on the effect of fine particle additive on the pressure fluctuations are projected. RESULTS: a) The pressure fluctuation in fully developed region increases with an increase in the solid concentration and particle diameter under 2 mm. Once it exceeds 2 mm, the pressure fluctuation is not affected by the particle diameter and nearly shows the constant values. b) The distance from the solid feeder affects the pressure fluctuation. However, when dunes are formed in the pipes, the fluctuation level is ovserved to be almost the same along, the pipes. c) The maximum pressure fluctuations due to the solid motion are observed in the transition region from the flow with a deposit bed and the one with a moving bed since the flow behavior effects the pressure fluctuations. d) The fine particle additive is observed to reduce the pressure fluctuation. e) It became clear from the application of MEP to estimattion of the probability density function of pressure fluctuation in solid-liquid flow in pipes that four moments MEP distribution function is suitable for the probability density function.

  36. Reclamation Work Method Using Hydraulic Transportation

    NODA Karoku, TAKAHASHI Hiroshi, MASUYAMA Tadashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Developmental Scientific Research

    Institution: TOHOKU UNIVERSITY

    1985 - 1986

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    (1) OBJECTIVE: This research objective is to get some results for contributing to reclamation work method using hydraulic transportation from studies on the dense phase slurry flow with lower viscosity fluid film flow aroun it in pipes, on the behavior of particles in solid-liquid two phase flow with moving bed in horizontal pipes, on the reduction of the pressure loss of the two phase flow by adding fine particles, on the circular jet of Bingham plastic fluid and the Bingham plastic fluid flow in rough pipes. (2) APPROCH: In order to achieve the objective, experimental researches on the pressure loss of the dense phase kaolinite slurry flow with water film flow around it in a pipe, on the velocity profile of the circular jet of Bingham plastic fluid and on the velocity profilo and the pressure loss of Bingham plastic fluid flow in rough pipes and theoretical studies on the behavior of particles in solid-liquid two phase flow with moving bed in horizontal pipes and on the velocity profile of the circular jet of Bingham plastic fluid are projevted. (3) RESULTS: a) The velocity profile of Bingham plastic fluid annular flow with inner cylinder moving axially is obtained theoretically. b) The behavior of particles and the relationship between the mmoving bed height and the mean velocity in solid-liquid two phase flow in horizontal pipes are analyzed. c) The maximum reduction of pressure loss owing to the fine particles addition to the silicasand-water mixture flow in a horizontal pipe 1.5 in in diameter is 60% of the pressure loss of the mixture flow with the same velocity in the pipe. d) The velocity profile of the circular jet of Bingham plastic fluid in the fully developed flow region is analyzed theoretically and confirmed by the experiment. e) From the results measured the pressure loss of Bingham plastic fluid flow in rough pipes, it is seen that the friction factor of the fluid flow in the fully rough surface region is the same as the friction factor of Newtonian fluid flow in that region.

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Social Activities 19

  1. EE東北2005

    2005/05/25 - 2005/05/26

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    東北大学大学院環境科学研究科地球開発環境学分野の研究紹介

  2. EE東北2004

    2004/05/26 - 2004/05/27

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    東北大学大学院環境科学研究科地球開発環境学分野の研究紹介

  3. 建設機械展示会2003 (CONET2003)

    2003/09/04 - 2003/09/05

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    建設機械展示会において建設機械の自動化に関する本研究室の研究内容を示すポスターを展示

  4. EE東北2003

    2003/05/21 - 2003/05/22

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    東北大学大学院環境科学研究科地球開発環境学分野の研究紹介

  5. EE東北2002

    2002/05/22 - 2002/05/23

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    東北大学大学院工学研究科地球工学専攻開発機械学分野の研究紹介

  6. 共同開発のボンテラン工法 国土技術開発賞を受賞

    2007/08/21 -

  7. 混合廃棄物から木くずを取り出す 「見て」「叩いて」「つかんで」選別

    2007/07 -

  8. 浄水泥土 花壇に変身

    2006/09/10 -

  9. 汚泥を再資源化 地震対策に有用

    2006/04/29 -

  10. 地方から始まる公共事業改革 地元生まれの工法を3者で普及

    2005/05/13 -

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    高橋研が(株)森環境技術研究所および民間企業数社との共同研究として開発した高含水泥土の再資源化処理技術である繊維質固化処理土工法に関する記事が,平成17年(2005年)5月13日発行の日経コンストラクションに掲載された.

  11. 東北大学先端技術交流会

    2005/02/01 -

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    環境科学研究科における研究・教育の紹介

  12. 超軟弱土をリサイクルし港湾・空港の軽量盛土に

    2003/09/10 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が港湾空港タイムスに掲載された

  13. 高含水汚泥の再資源化工法で説明会 東北大などが開催

    2003/08/27 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が環境新聞に掲載された

  14. 東北大学など6者 ボンテラン工法の説明会 新しい処理機開発計画も

    2003/08/25 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が循環経済新聞に掲載された

  15. 軽く,強く,自由に

    2003/08/20 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が河北新報に掲載された

  16. 建設汚泥・ヘドロの再資源化 新工法の説明会

    2003/08/19 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が建設企業新聞に掲載された.

  17. 建設汚泥 盛り土に再利用 軽量で高強度

    2003/08/14 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が日本経済新聞に掲載された.

  18. 古紙混ぜて建設汚泥固化 粘り強く高耐久 産学官で再資源化工法

    2003/08/08 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が日刊建設工業新聞に掲載された.

  19. 汚泥 ポリマー加え良質化

    2003/07/30 -

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    建設汚泥等の新しい再資源化工法である繊維質固化処理土工法の概要が河北新報に掲載された

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Media Coverage 15

  1. 情熱Labo

    ミヤギテレビ News every

    2022/09/30

    Type: TV or radio program

  2. 津波たい積土砂で汚染土を覆う実験

    NHK NHKニュース

    2013/09/18

    Type: TV or radio program

  3. 津波堆積物の”土砂”再利用目指し実験

    KHB東日本放送 KHB東日本放送ニュース

    2013/06/14

    Type: TV or radio program

  4. 津波堆積物の”土砂”再利用目指し実験

    ミヤギテレビ 宮城テレビニュース

    2013/06/12

    Type: TV or radio program

  5. 津波堆積物を土木工事資材に

    NHK NHKてれまさむね

    2013/06/12

    Type: TV or radio program

  6. "津波堆積物”を再利用

    ミヤギテレビ 宮城テレビニュース

    2013/06/12

    Type: TV or radio program

  7. モーニングバード アカデミ・ヨシズミ

    テレビ朝日 モーニングバード

    2012/03/05

    Type: TV or radio program

  8. 東北大学が資源化実験 ヘドロを使って復旧を

    ミヤギテレビ ミヤギnews every

    2011/11/02

    Type: TV or radio program

  9. SLUDGE SURVIVAL

    NHK NHK WORLD NEWSLINE

    2011/09/06

    Type: TV or radio program

  10. 夢の取り組み 厄介物”ヘドロ”が盛土に!!

    ミヤギテレビ スーパーJチャンネルみやぎ

    2011/09/06

    Type: TV or radio program

  11. 始まった被災地のヘドロ処理

    NHK NHKおはよう宮城

    2011/08/16

    Type: TV or radio program

  12. 汚泥再生で国土技術開発賞

    山形放送ニュース「リアルタイム」

    2007/07/05

    Type: TV or radio program

  13. やっかいものを再生 ヘドロや汚泥を新しい土に

    NHK山形放送局

    2006/09/27

    Type: TV or radio program

  14. やっかいものをリサイクル

    NHK山形放送

    2004/12/08

    Type: TV or radio program

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    高橋研が(株)森環境技術研究所および民間企業数社との共同研究として開発した高含水泥土の再資源化処理技術である繊維質固化処理土工法が,平成16年12月8日にNHK山形放送局から「報道室リポートやっかいものをリサイクル」と題して放送された.

  15. 汚泥もリサイクル次第

    山形放送

    2003/05/14

    Type: TV or radio program

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    東北大学大学院環境科学研究科地球開発環境学分野,(株)森環境技術研究所(新庄市),(株)八千代エンジニアリング,(株)東京ソイルリサーチ,山形県最上総合支庁,(株)環境テクノサービスが共同で開発した建設汚泥等の新しい再資源化工法の説明会の様子が山形放送のニュースで取り上げられた.

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Other 20

  1. 自走式土質改良機による環境負荷低減工法の開発

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    廃石膏ボード粉を粘性土に事前混合することにより本施工の作業量を低下させることなく,効率を確保する.

  2. クラッシャー内削化基礎研究

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    ジョークラッシャの構成要素を変化させ,処理量・粒度にどのような影響があるかを解析する.

  3. 水平坑井内フォーム・ドリリングにおけるカッティングス・トランスポートに関する実験的研究

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    フォームの流動およびカッティングス流送時の摩擦損失について実験的に検討する.

  4. 地盤自在掘進機械の開発に関する研究

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    地盤自在掘進機械の開発に関する研究

  5. 工場排出無機性汚泥と廃石膏ボード紙の複合利用による機能性地盤材料の開発

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    工場排出無機性汚泥と廃石膏ボード紙の複合利用による機能性地盤材料の開発

  6. 工場排出無機性汚泥と廃石膏ボード紙の複合利用による機能性地盤材料の開発

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    工場排出無機性汚泥と廃石膏ボード紙の複合利用による機能性地盤材料の開発

  7. クラッシャー内削化基礎研究

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    ジョークラッシャの構成要素を変化させ,処理量・粒度にどのような影響があるかを解析する.

  8. 地盤自在掘進機械の開発に関する研究

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    地盤自在掘進機械の開発に関する研究

  9. 廃石膏ボードを利用した「繊維入り半水石膏系固化材」の開発

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    廃石膏ボードを利用した「繊維入り半水石膏系固化材」の開発

  10. 脱水ケーキを利用した機能性球形骨材の生成に関する研究

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    脱水ケーキを利用した機能性球形骨材の生成に関する研究

  11. 汚染土壌不溶化処理機械の開発に関する研究

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    汚染土壌不溶化処理機械の開発に関する研究

  12. 浄水汚泥を用いたヒートアイランド現象緩和のための屋上緑化用植生基盤材の開発

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    浄水発生土を繊維質処理土工法により再資源化し,屋上緑化用の植生基盤材を作成するとともに,その土壌物理特性を把握する.

  13. パドル式混合処理機械の攪拌トルクに関する研究

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    パドル式混合処理機械の攪拌トルクに関する研究

  14. 汚染土壌不溶化処理機械の開発に関する研究

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    汚染土壌不溶化処理機械の開発に関する研究

  15. 多軸パドル式混合機に関する研究

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    多軸パドル式混合容器内における土砂と添加剤の混合トルクについて実験的に検討する.

  16. 汚染土壌不溶化処理機械の開発に関する研究

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    汚染土壌不溶化処理機械の開発に関する研究

  17. 次世代氷床内部探査システムに関する研究

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    氷床融解型の新しい掘削システムを提案し,その基礎的な性能について検討した.

  18. 下水道汚泥焼却灰の有効利用に関する研究

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    下水道汚泥焼却灰の有効利用に関する研究

  19. 軽量繊維質固化処理土の強度および劣化特性に関する研究

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    軽量繊維質固化処理土の強度および劣化特性に関する研究

  20. ジオメカトロニクスの高度展開に関する研究

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    地盤,建設機械,電子工学を融合した機械の自動施工システムの開発

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