近距离煤层外错布置巷道支护技术研究

Research on Supporting Technology for Roadway Layout in Close Distance Coal Seam

以山西省晋能集团盛平煤矿3#煤近距离煤层开采为研究背景,针对下层煤工作面巷道外错布置于上层工作面煤柱下方,巷道顶板破碎支护效果差的问题,采用FLAC3D数值模拟方法对下层工作面巷道外错布置于煤柱下方时的应力分布情况及围岩变形情况进行了研究,对类似近距离煤层工作面巷道的支护具有重要的借鉴意义。

Taking Shengping Coal Mine of Shanxi Jinneng Group as the research background,aiming at the problem that the roadway of the lower coal face is arranged under the pillar of the upper coal face and the roof of the roadway is broken and the supporting effect is poor,the stress distribution and surrounding rock deformation of the roadway of the lower coal face when the roadway is arranged under the pillar are studied by FLAC3D numerical simulation method.The support of roadways in similar short-distance coal seams has important reference significance.