Abstract: Combining the physical and mathematical simulations the strain field and its evolution near locked region are studied. The characteristics of pre-seismic strain fields and displacement fields around the bodies of seismic source with different shapes were discussed, and the strain changes before, just before, during and after earthquakes were also analyzed. Taking notice of the difference around an epicenter from its surrounding permits us preliminarily to explain the strain process of each point relevant to the tectonic conditions, fracturing process and its position in the stress field.

摘要： 本文用物理模拟与数学模拟相结合的方法探讨了闭锁区附近的应变场及其演化。研究了不同形状震源体周围震前应变场、位移场的总特点。分析了震前、临震、震时与震后的应变变化。注意了震中附近与外围区的区别。所得结果初步阐明各点的应变过程是与构造条件、破裂过程及该点在应力场中所处位置有关。