It was shown that the variations of the stress field of rock strata,deformation and displacement of discontinuous blocks,strata collapse and abscises could be efficiently figured out by means of DDA.

• 应用DDA数值方法模拟分析了深部煤矿开采中上覆岩层的应力场变化和变形移动规律,并与相似物理模型试验进行了对比。