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A fundamental study on mechanical behaviors of small earth dams with GCLs.

Research Project

Project/Area Number 16K15008
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Rural environmental engineering/Planning
Research InstitutionKobe University

Principal Investigator

KAWABATA TOSHINORI  神戸大学, 農学研究科, 教授 (20335425)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsため池 / 遮水シート / 動的挙動 / 圧密試験 / 一面せん断試験 / 振動実験 / ベントナイト系遮水シート / 透水係数 / 耐震性 / 新材料 / 環境配慮 / 遮水材
Outline of Final Research Achievements


In recent years, geosynthetic clay liners are used as impermeable materials in small earth dams because of lack of core materials. However, the design for small earth dams with GCLs has not been established yet. In the present study, consolidation tests, direct shear tests for soil/GCL interfaces and shaking model tests have been conducted in order to reveal fundamental behavior of GCLs and dynamic behavior of small earth dams with GCLs under conditions considering circumstances of small earth dams. As a result, it can be revealed that the water-barrier performance and the shear strength likely to be sufficient under small confining pressure condition such as small earth dams. On the other hand, the experimental results have revealed that GCLs could not be expected as reinforcement materials and the embankment’s failure mechanism depends on the setting shape of GCLs.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (7 results)

All 2018 2017 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] Shear strength characteristics of internal bentonite layer of needle-punched GCL used in small earth dams under cyclic loading2018

    • Author(s)
      Shigemoto, R., Sawada, Y., Maki, R. and Kawabata, T.
    • Journal Title

      Geotechnical Special Publication, ASCE

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ベントナイト系遮水シートとため池堤体土のせん断強度特性2017

    • Author(s)
      重元凜太郎,澤田豊,眞木陸,河端俊典
    • Journal Title

      ジオシンセティックス論文集

      Volume: 32 Pages: 73-80

    • NAID

      130007555899

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] ため池堤体内に設置されるベントナイト系遮水シートの力学特性に関する検討2017

    • Author(s)
      重元凜太郎,澤田豊,清水敬三,西村達也,神信浩一,河端俊典
    • Organizer
      平成29年度農業農村工学会大会講演会
    • Related Report
      2017 Annual Research Report 2016 Research-status Report
  • [Presentation] 遮水シート工法により改修されたため池堤体の動的挙動に関する小型振動実験2017

    • Author(s)
      重元凜太郎,眞木陸,澤田豊,小竹望,鈴木麻里子,清水敬三,井上和徳,神信浩一,中澤博志,小田哲也,河端俊典
    • Organizer
      平成29年度農業農村工学会大会講演会
    • Related Report
      2017 Annual Research Report 2016 Research-status Report
  • [Presentation] 低拘束圧下におけるベントナイト系遮水シートのせん断強度特性その1-シートと土の境界面での一面せん断試験-2017

    • Author(s)
      重元凜太郎,澤田豊,眞木陸,河端俊典
    • Organizer
      第74回農業農村工学会京都支部研究発表会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 低拘束圧下におけるベントナイト系遮水シートのせん断強度特性その2―シート継目の重ね合わせ部での一面せん断試験―2017

    • Author(s)
      眞木陸,重元凜太郎,澤田豊,河端俊典
    • Organizer
      第74回農業農村工学会京都支部研究発表会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 神戸大学農学研究科土地環境学研究室

    • URL

      http://www.research.kobe-u.ac.jp/ans-soilenv/

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

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