用二相介质有限元方法对共和7.0级地震前兆的数值模拟

NUMERICAL SIMULATION OF GONGHE EARTHQUAKE(M=7.0) PROCESS BY THE FINITE ELEMENT METHOD IN TWO PHASE MEDIUM

摘要:

利用固-液二相介质平面应变问题的有限元程序对共和7.0级地震的前兆现象的时空分布进行了数值模拟.研究中不仅考虑了固相的非线性、硬化及膨胀等效应,也充分考虑了水对前兆的影响,因此模拟结果与实际的前兆分布特征符合较好.

Abstract:

The Gonghe earthquake (M=7.0) and its precursors are simulated by the finite element method in two-dimensional plane strain model. In this model, not only the effect of nonlinear, hardening, dilation of solid phase, but also the influence of water be considered, so distribution of precursors by the simulation is similar to that of fact.