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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。
In order to study the stability of the surrounding rock of coal seam mining at the fault site, two constitutive models in FLAC3D software were used to simulate the actual project. Through the comparative analysis of the results, the displacement trend of coal and coal seams and the distribution of plastic zone of coal and rock are obtained. The results show that the displacement distribution of coal and coal is consistent under two different constitutive models. However, the maximum displacement of coal seam and the plastic zone of coal and rock under strain softening model are much larger than the Mohr-Coulomb model.