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Abstract The change of resistivity of rock during its damage process is studied by uniaxial cyclic loading and unloading test. The variation rules of rock resistivity，elastic modulus and compression strength in the damage process is found out that it accords logarithmic mathematical model. So the rock damage variable can be expressed in resistivity change. The results of marble triaxial compression test show that the relationship between rock elastic modulus and shear strength accords logarithmic mathematical model；and the difference of the whole variation law is not obvious. According to the research results mentioned above，the empirical equation regarding resistivity，elastic modulus，compression strength and shear strength is established；and the variability of mechanical properties of rock mass can be expressed with resistivity change. At last，the mechanical parameters of disturbed rock mass are estimated according to apparent resistivity change of Donglutian open pit layer in Fushun got by in-situ detection，which provide basic evidence of selecting mechanical parameters for further analysis of the slope stability.
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Received: 21 March 2011
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2011, Vol. 30 
