摘要
首先运用岩石介质的损伤本构关系式和断层地震的简单力学模型,讨论了断层和围岩介质系统的相互作用及其失稳过程,通过差分计算,得到了与地震变形和声发射等有关的前兆序列曲线,然后根据实际断层带滑移与错动的分布规律,通过计算机模拟出断层地震的椭圆形孕震区并由此解释了P波初动分布规律。
This paper first analyzes the interaction and unstable process of fault-country rock system by means of damage constitutive relation of rock medium and a simple mechanic model. Then precursory curves related to earthquake deformation and acoustic emission are gained through differential calculation. According to actual fault sliding, authors obtain the ellipse seismogenic area of fault earthquake, and illustrate the first motion of P wave.
出处
《地震》
CSCD
北大核心
1996年第4期355-362,共8页
Earthquake
基金
国家自然科学基金资助(1942018)
关键词
断层
地震
孕震
地震前兆
弹性回跳
Elastic rebound pattern, Seismogenic area, Seismic model, Instability
