极近距离下部煤层回采巷道布置及支护研究

Study on the Layout and Support of Mining Roadway in Ultra Contiguous Seam

针对高山沟煤矿极近距离煤层实际情况,分析了8111工作面煤岩赋存条件,通过理论计算和工程类比确定了运输平巷和回风平巷的位置,内错上部采空区边缘5 m;依据上层煤对底板的破坏深度,选择了回采巷道的支护形式和支护参数。8111工作面开采期间生产安全,为类似条件工作面的开采提供了有益的借鉴。

According to the actual situation of extremely close coal seam in Gaoshangou coal mine,the coal and rock occurrence conditions of 8111 working face are analyzed,and the positions of transport drift and return air drift are determined by theoretical calculation and engineering analogy.According to the failure depth of the upper coal to the floor,the supporting form and supporting parameters of the stopping roadway are selected.Production safety during mining of 8111 working face provides beneficial reference for mining of similar working face.