断层相互作用的模拟研究

Simulation of the Interaction of Faults

以库仑破裂应力变化计算为基础,研究断层的相互作用。从震源断层和投影断层两个角度出发,研究5种地震断层模型分别描述地震断层和投影断层时库仑破裂应力变化的分布特征,分析震源断层以及投影断层的不同滑动机制对库仑破裂应力变化分布的影响。分析发现,断层的相互作用与断层的滑动机制关系密切;走滑断层还与其左右旋有一定关系;除斜滑断层外,其他断层之间的相互作用呈现一定的对称关系。

In this paper,the interaction of faults is studied based on the calculation of Coulomb failure stress.From the two aspects of source fault and receiver fault,five kinds of seismic fault models are selected to study the distribution characteristics of Coulomb failure stress when these five fault models are used as source faults and receiver faults,and we analyze the influence of the different slip mechanisms of the source fault and the receiver fault on the distribution of the Coulomb failure stress.On the basis of the analysis,it is found that the fault and slip mechanism of the fault are closely related.The strike-slip fault also has a certain relationship with the left and right rotation.In addition to the skew fault,the interaction between the other faults shows a certain symmetrical relationship.