GENG NAIGUANG, HAO JINSHENG, LI JIHAN, LIU XIAOHONG, FANG YARU, CAI DAIEN. 1987: STRESS PATH AND FRICTIONAL SLIDING OF ROCKS. Acta Seismologica Sinica, 9(2): 201-207.
Citation: GENG NAIGUANG, HAO JINSHENG, LI JIHAN, LIU XIAOHONG, FANG YARU, CAI DAIEN. 1987: STRESS PATH AND FRICTIONAL SLIDING OF ROCKS. Acta Seismologica Sinica, 9(2): 201-207.

STRESS PATH AND FRICTIONAL SLIDING OF ROCKS

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  • Published Date: September 01, 2011
  • Frictional sliding experiments with Jinan gabbro and Diancangshan marble are made by the bishear test method. There are two types of stress change in the experiments. Type A: The normal stress on the fault plane is increased first, then it is kept constant and the shear stress is increased until stick-slip happens; Type B: The normal stress on the fault plane is increased first, keeping it constant and the shear stress is increased to a certain value before stick-ship, then the shear stress is kept constant and the normal stress docreased until the happening of stick-slip. The experiments show that the frictional strength of rocks in type B experiments is higher than that in Type A, There is precusory increase of AE rate before stick-slip in Type A, but this has not been observed in Type B. It is suggested that there are two forms of dislock-ing of the locked faults: Dislcking by rushing, the fault movement is caused by an increase of the shear stress; Dislocking by relaxing, the fault movement is caused by a decrease of the normal stress. The form of stick-slip of faults is determined by the path of stress change in fault
  • [1] 耿乃光、姚孝新、陈颗、许东俊,应力途径的研究,中国地震,1, 61——66, 1985

    [2] 耿乃光,应力减小引起地震,地震学报,7, 445——451, 1985,

    [3] 耿乃光,由岩石力学实验研究地震前兆,地球物理学报〔待发表).

    [4] Brace, W. F., Byerlee, J. D., Stick——slip as a mechanism for earthquakes, Science, 153, 990——992, 1966.

    [5] Byerlee,J. D., The mechanics of stick——slip,Teczonophysics, 9, 475——486, 1970.

    [6] Scholz,C. H., Molnar, P. M., Johnson,T.L.,Detailed studies of frictional sliding of granite and implication for the earthquake mechanism, J. Geophy. Res., 77, 6372——6406, 1972.

    [7] Ohnaka,M,Frictional characteristics of typical rocks,J. Phys. Earth, 23,87——112, 1975.

    [1] 耿乃光、姚孝新、陈颗、许东俊,应力途径的研究,中国地震,1, 61——66, 1985

    [2] 耿乃光,应力减小引起地震,地震学报,7, 445——451, 1985,

    [3] 耿乃光,由岩石力学实验研究地震前兆,地球物理学报〔待发表).

    [4] Brace, W. F., Byerlee, J. D., Stick——slip as a mechanism for earthquakes, Science, 153, 990——992, 1966.

    [5] Byerlee,J. D., The mechanics of stick——slip,Teczonophysics, 9, 475——486, 1970.

    [6] Scholz,C. H., Molnar, P. M., Johnson,T.L.,Detailed studies of frictional sliding of granite and implication for the earthquake mechanism, J. Geophy. Res., 77, 6372——6406, 1972.

    [7] Ohnaka,M,Frictional characteristics of typical rocks,J. Phys. Earth, 23,87——112, 1975.
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