特殊构造段条件下切眼施工方案

Cutting-hole Construction Scheme Exploration under Special Tectonic Conditions

葛泉矿南翼1621工作面顶板及煤层风化严重,巷道整体抗压、抗剪强度比较低,支护方式均为锚网支护,因构造条件特殊,对掘进工作带来不利影响。在采用大断面切眼托顶煤施工工艺后,取得了良好效果。该工艺开创了葛泉矿2号煤托顶煤掘进的先例,对特殊构造段的掘进施工具有指导意义。

The roof and coal seam of south wing 1621 working face in Gequan Mine was seriously weathered.Crush and shearing resistance of the whole roadway was relatively weak and the anchor net supporting was adopted.The special tectonic brought out the adverse impact on the heading work.The large cross section top coal prop construction technology achieved good results through study and it pioneered the top coal prop construction heading of No.2 seam in Gequan Mine,which was of great significance for guiding the construction of special tectonic segment.