岩石破壊過程の安定・不安定性に及ぼす水の役割 Effect of Water on Stability or Instability of the Shear Fracture Process of Rock

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In order to clarify the effect of water on stability or instability of the shear fracture process of rock, it is critical to study the influence of water on the constitutive properties of the shear fracture process. For this purpose, experiments on fracture of intact granite rock samples have been performed under dry and wet conditions at the following two tempera-tures: 270°C and 450°C. The experimental results indicate that the shear fracture stability or instability is not affected by the magnitude of pore water pressure, but it is strongly affected by temperature ; the shear fracture process is stabilized at temperatures higher than 300°C. The peak shear strength increases linearly with the effective normal stress at temperatures below 300°C. At temperatures above 300°C, however, thepeak strength is lower than that expected from the effect of the effective normal stress. It is discussed how water released by a decomposition reaction of hydrous minerals contained in rock affects stability or instability of the shear fracture.

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  • 地學雜誌  

    地學雜誌 109(4), 554-563, 2000-08-25 

    Tokyo Geographical Society

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各種コード

  • NII論文ID(NAID)
    10004724349
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0022135X
  • NDL 記事登録ID
    5467398
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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