过上覆采空区煤柱巷道支护工艺应用

Application of roadway supporting technology cross overlying gob with coal pillars

同煤集团四台煤矿14煤412盘区51220巷掘进工作面在掘进过程中需要过上覆12煤412盘区81220采空区与12煤412盘区81001采空区所留设的煤柱,在应力集中煤柱区域还要与同层相邻的14煤412盘区81218工作面进行采掘交锋,对51220巷煤柱下支护工艺进行了完善,保证了支护安全。

In the process of driving working face of 51220 roadway for No.412 panel in No.14 coal seam of Sitai Mine, Datong Coal Industry Group, the working face should cross the coal pillar of overlying 81220 gob of No.412 panel in No.12 coal seam and the coal pillar of 81001 gob of No.412 panel in No.12 coal seam, it also encounter the adjacent 81218 working face of No.412 panel in No.14 coal seam. The supporting technology of coal pillar under 51220 roadway was perfected to ensure the safety of supporting.