中文摘要：

为研究断层处煤层开采围岩的稳定性,采用FLAC3D软件中的2种本构模型针对实际工程进行数值模拟。通过对结果的比较分析,得到了煤岩、煤层的位移变化趋势及煤岩塑性区的分布规律。研究结果表明：2种不同本构模型下煤岩和煤层的位移分布规律是一致的,但应变软化模型下煤层最大位移量和煤岩塑性区都远大于摩尔-库仑模型。

英文摘要：

In order to study the stability of surrounding rock at fault in the coal seam,two constitutive models of FLAC-（3D） are used to simulate the model for the actual engineering. Through the comparative analysis of the results,the displacement trend of coal and rock and the distribution of plastic zone in coal are obtained. The results indicates,the displacement distribution of coal and rock are similar under two different constitutive models,but the maximum displacement of coal seam and the plastic zone of coal rock under strain softening model are much larger than those of Mohr-Coulomb model.