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在双轴加载条件下，研究了几种具不同几何结构的断层系变形破坏过程中应变、断层位移和声发射事件的时空分布，并对典型失稳事件的特征进行了分析．研究表明：具不同几何结构的断层系有不同的变形物理场演化图象；根据物理场演化特征和变形机制的差异，可识别出两类粘滑型失稳、破裂型失稳及混合型失稳，不同类型的失稳在前兆上有明显差异；失稳类型与断层几何结构及变形阶段密切相关．因此，研究自然界断层的几何结构，对地震预报和地震前兆观察研究极为重要．
Under biaxial loading conditions, the spatiotemporal distribution of strain, fault displacement and acoustic emission events during the deformation and failure of several fault systems with different geometric structures was studied. The characteristics of typical instability events were also analyzed. The results show that the fault systems with different geometric structures have different evolutionary images of the deformation field. According to the difference between the evolution characteristics of the physical field and the deformation mechanism, two types of slip-slope failure and failure Steady and different types of instability have obvious differences on precursors; instability types are closely related to the fault geometry and deformation stage. Therefore, studying the geometry of faults in nature is very important for the study of earthquake prediction and earthquake precursor observation.