由于岩石在高矿压条件下具有较大塑性变形,深部软岩巷道变形与破坏特征较为复杂,巷道的稳定性控制变得非常棘手,因此选择合适的巷道支护方法尤其重要。以具有上述地质赋存条件的邢村煤矿为工程背景,根据支护理论分析与数值分析,基于FLAC^3D有限差分软件,系统研究了支护参数对于围岩变形、应力和塑性区分布的影响规律。结果表明对于软岩破碎巷道,采用复合支护方法比传统单一支护,具有显著支护效果,更能有效控制巷道变形,从而为控制软岩破碎巷道变形提供一定的研究基础。

Due to big plastic deformation of rock under high geostress, roadway deformation and failure characteristics of deep soft rock roadway are complex, and stability control of the roadway becomes very difficult. In light of this, it is important to choose proper support method for the roadway. Xingcun coal mine, with similar geological storage, is taken as research background. According to theoretical analysis and numerical analysis of support, based on the finite difference software FLAC^3D, we systematically study the influence of support parameters on rock deformation, stress distribution and plastic zone distribution. The results show that, as for the soft crushed rock roadway, composite support method is superior to traditional method with single support .We can effectively control roadway deformation and obtain obvious support effect by using the composite method. Finally, the research can be reference for deformation control of soft crushed rock roadway in similar projects.