岩盤不連続面内の接触変化を考慮した流動機構数値解析手法の提案と検証 Numerical Modeling of Fluid Flow in Single Rock Fracture during Shear with Special Algorism for Contact Areas

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The fluid flow in a single rock fracture during shear processes has been an important issue in rock mechanics and is investigated in this study using the Finite Element Method (FEM), considering evolutions of aperture and transmissivity with shear displacement histories under different normal loading conditions. The distributions of fracture aperture and its evolution during shear were calculated from the initial aperture, based on the laser-scanned sample surface roughness features, and shear dilations measured in the laboratory coupled shear-flow tests. Three rock fractures with different roughness were used as parent samples from which nine replicas were made and tested under three normal loading conditions. For flow simulations, a special algorithm for treating the contact areas as zero-aperture elements was used to produce more accurate flow field simulations, which provide good agreement with the flow rate data obtained from the laboratory tests, showing that complex histories of fracture aperture and tortuous flow fields with changing normal stress and increasing shear displacements.

収録刊行物

  • Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan  

    Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan 124(2), 129-136, 2008-02-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10021121236
  • NII書誌ID(NCID)
    AA12188381
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    18816118
  • NDL 記事登録ID
    9398410
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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