西铭矿9~#煤层回采巷道合理位置及控制研究

Study on Reasonable Position and Control of Mining Roadway in 9~# Coal Seam in Ximing Coal Mine

为解决近距离煤层采空区下回采巷道围岩变形较大的问题,以西铭矿49405工作面实际地质条件为背景,提出工作面巷道应采用内错式布置,并计算得出合理错距应为8.0 m,根据加固拱理论,对巷道支护参数进行计算分析,确定合理的支护方案,在现场实践中取得良好效果,为相似条件下工作面巷道的布置方式及控制提供参考。

In order to solve the problem of roadway surrounding rock deformation in close distance coal seam mining under goaf, take 49405 face in Ximing Coal Mine actual geological condition as the background, should use the inner crossing layout is put forward, and calculates the reasonable distance should be 8.0m, then according to the reinforcing arch theory, calculation and analysis of roadway support parameter, we determine reasonable supporting scheme, obtain good results in the feld practice, for the arrangement and control of the working face roadway under similar conditions to provide the reference.