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YAO XIAOXINup, GENG NAIGUANGup, XU DONGJUNup2. 1984: COMPARATIVE STUDIES OF MICROCRACKS IN GRANITE SAMPLES IN TWO TRIAXIAL EXPERIMENTS. Acta Seismologica Sinica, 6(4): 455-460.
Citation: YAO XIAOXINup, GENG NAIGUANGup, XU DONGJUNup2. 1984: COMPARATIVE STUDIES OF MICROCRACKS IN GRANITE SAMPLES IN TWO TRIAXIAL EXPERIMENTS. Acta Seismologica Sinica, 6(4): 455-460.
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COMPARATIVE STUDIES OF MICROCRACKS IN GRANITE SAMPLES IN TWO TRIAXIAL EXPERIMENTS

  • 1. Institute of Geophysics, State Seismological Bureau; 2. Institute of Rock and Soil Mechanics, Academia Sinica

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  • Published Date: August 31, 2011
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  • The microcracks in samples of Inada granite after triaxial experiments were examined by microscope. The microcracks in two types of triaxial experiments, covention-al triaxial (1>2 = 3) and true triaxial (1>2>3) were compared. The observation showed that the anisotropic dilatancy effect of brittle rocks as revealed by K. Mogi in true triaxial experiment was caused by aiiisotropic microcracks in rocks, thus indicating its microscopic nature. The effect of anisotropie dilatancy and anisotropic microcracks caused by the principal stress of intermediate magnitude with regard to earthquake studies was preliminarily discussed.
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    • References (1)
  • [1] Von Kármán, Th., Festigkeitsversuche untet allseitigem Druck, Z. Ver. Dt. Ing, 55, 1749——1757,1911.

    [2] Mogi, K., Effect of the triaxial stress system on the failure of dolomite and limestone, Tectonophy——sits, 11, 11, 111——127, 1971.

    [3] Mogi, K. Fracture and flow of rocks under high triaxial compression, J. Geophys. Res. 76, 5,1255——1269, 1971.

    [4] Mogi, K., Dilatancy of rocks under general ttiaxial stress states with special reference to earthquake precursors,J.Geophys. Res. 25, Suppl, 203——217, 1977.

    [5] 许东俊、耿乃光,中等主应力变化引起的岩石破坏与地震,地震学报,6, 2, 159—— 166, 1954,

    [6] Chen Rong, Yao Xiaoxin, and Xie Hongsen, Studies of fracture of gabbro, Int.J.Rock. Mech.Min Sci., 16, 187——193, 1979.

    [1] Von Kármán, Th., Festigkeitsversuche untet allseitigem Druck, Z. Ver. Dt. Ing, 55, 1749——1757,1911.

    [2] Mogi, K., Effect of the triaxial stress system on the failure of dolomite and limestone, Tectonophy——sits, 11, 11, 111——127, 1971.

    [3] Mogi, K. Fracture and flow of rocks under high triaxial compression, J. Geophys. Res. 76, 5,1255——1269, 1971.

    [4] Mogi, K., Dilatancy of rocks under general ttiaxial stress states with special reference to earthquake precursors,J.Geophys. Res. 25, Suppl, 203——217, 1977.

    [5] 许东俊、耿乃光,中等主应力变化引起的岩石破坏与地震,地震学报,6, 2, 159—— 166, 1954,

    [6] Chen Rong, Yao Xiaoxin, and Xie Hongsen, Studies of fracture of gabbro, Int.J.Rock. Mech.Min Sci., 16, 187——193, 1979.
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