EFFECT OF LOCAL STRESS ON THE INTERFACE RESPONSE TO DYNAMIC LOADING IN FAULTED CRUST
S.V. Astafurova, E.V. Shilkoa, V.V. Ruzhichb, S.G. Psakhiea
a Institute of Strength Physics and Materials Science, Siberian Branch of the RAS, 2/1, prosp. Akademichesky, Tomsk, 634021, Russia
b Institute of the Earth's Crust, Siberian Branch of the RAS, 128, ul. Lermontova, Irkutsk, 664033, Russia
Keywords: Faulted crust; interface; dynamic loading; response; slip; stress
Pages: 52-58
Abstract
The effect of local stress on the interface response to dynamic loading in faulted crust has been studied through MCA (movable cell automata) simulation. Knowing the strain response of a fault block boundary to test impacts, one can estimate the proximity of the fault to critical stress that allows an unstable slip. The computing results are consistent with data of field experiments in fault fragments (vibration, water injection, explosions). The reported analysis makes the basis for a new approach to estimating stress and strain in active faults.
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