From the analysis of the faults distributing characters,the main part of faults have two group normal fault system with "lambdoidal shape"and trending towards to NE and NS separately.

从断裂展布特征分析,其构造主体部位为北东向和近南北向两组正断层组成的“人”字形断裂系统,向东收敛,断层非常发育。