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采用几何损伤理论和方法推导了地壳存在不同方向和大小的断层时的有效应力的公式 ,讨论了利用几何损伤理论来分析和计算地壳中存在不连续断层的理论和方法 ,同时对中国新疆伽师地区的地应力变化用几何损伤理论和方法结合该地区的GPS资料进行了数值计算研究 ,通过比较计算结果与 1 997年 1月至 1 998年 1 2月发生在该地区的MS ≥ 5 .0地震活动可以看出 ,新疆南部的中强地震活动区主要在应力场变化激烈的地区 .
Using the theory and method of geometric damage, the effective stress formula of crust with different directions and sizes of faults is deduced. The theory and method of using geometrical damage theory to analyze and calculate the discontinuous fault in the crust are discussed. At the same time, The change of geo-stress in the area has been studied numerically by using the geometric damage theory and method combined with GPS data in the area. By comparing the calculated results with the MS ≥ 5.0 found in the area from January 1997 to January 1998 As can be seen from the seismic activity, the moderately strong seismic activity area in southern Xinjiang is mainly in the area where the stress field changes drastically.