In this paper,the authors apply the 3-D finite element method of visco-elastic medium to simulate the effect of some kinds of fault on the stress-strain field of layered medium under the lateral boundary condition of a constant rate of displacement loading,and then proceed to bring to light the effect of faults on station location of apparent resistivity through the relation between the stress-strain field and the changes of apparent resistivity. The results show that the mutual location between the geoelectrical station and fault,and the mechanical features and the types of fault have important significance to the selection of the place of geoelectrical station.Parallel fault which is seriously broken and wide has some obstructive effect on apparent resistivity information,and compact dead fault,the medial part of vertical fault and the ends of transcurrent fault have enlarging effect on apparent resistivity information.The authors also discuss the effect of two different types of seismic fault on the observation of apparent resistivity,the conclusion is that the dislocation earthquake has stronger precursory information than the slip earthquake.
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阮爱国,赵和云.地电台址构造条件的三维有限元数值模拟[J].地震工程学报,1991,13(4):22-28. Ruan Aiguo, Zhao Heyun. NUMERICAL SIMULATION OF 3-D FINITE ELEMENT METHOD OF THE STRUCTURE CONDITION OF GEOELECTRICAL STATION[J]. China Earthquake Engineering Journal,1991,13(4):22-28.