半径方向の剛性変化に注目した岩石の構成方程式 Constitutive Equations for Rocks, Based on Radial Stiffness Decrease

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著者

    • 藤井 義明 FUJII Yoshiaki
    • 北海道大学大学院工学研究科社会基盤工学 Division of Structural and Geotechnical Engineering, Graduate School of Engineering, Hokkaido University
    • 石島 洋二 ISHIJIMA Yoji
    • 北海道大学大学院工学研究科社会基盤工学 Division of Structural and Geotechnical Engineering, Graduate School of Engineering, Hokkaido University

抄録

A linear equation between axial strain, circumferential strain and axial stress was found while performing compression tests on several kinds of rock. This equation means that in such laboratory tests the trace of axial strain, circumferential strain and axial stress is located on a plane in the three-dimensional space defined by these quantities. New constitutive equations were derived combining the above-mentioned equation with another equation which derived assuming that the stiffness in the radial direction decreases with radial expansion. Using the set of the newly-deduced constitutive equations, the effect of confining pressure on strength and strain-softening behavior including Class? can be simulated. Numerical results also show the decrease in radial stiffness due to crack existence.

A linear equation between axial strain, circumferential strain and axial stress was found while performing compression tests on several kinds of rock. This equation means that in such laboratory tests the trace of axial strain, circumferential strain and axial stress is located on a plane in the three-dimensional space defined by these quantities. New constitutive equations were derived combining the above-mentioned equation with another equation which derived assuming that the stiffness in the radial direction decreases with radial expansion. Using the set of the newly-deduced constitutive equations, the effect of confining pressure on strength and strain-softening behavior including Class� can be simulated. Numerical results also show the decrease in radial stiffness due to crack existence.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan  

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(3), 169-174, 1998-03-25 

    資源・素材学会

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各種コード

  • NII論文ID(NAID)
    10002467254
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4447700
  • 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  IR  J-STAGE 
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