摘要
文章通过对焦作煤田大煤顶分层沿空留巷大量观测资料的分析,闸明在大煤既定的围岩特征和留巷所采用的支护方式条件下,“支驾——围岩”这一对相互作用的力学力系,在采场支承压力作用下趋向平衡时所呈现的矿压规律。从而分析留巷所采用的梯形“工”字钢支架,巷内架设抬棚的支护方式的合理性。
This article analyses lots of observated data of roof bench remained heading along goaf of Big Coal Seam of Jiaozuo Coal field Under the condition of character of present surrouding rock of Big Coal seam and supporting pattern taken in remained head ing,it clarifies that interacting dynamic system of support and surrouding rock tending to balance on the face abutment pressure presents strata pressure principle.Therefore,it analyses the tea sonability of tra pezoid joist steel support and supporting pattern of lifting shed installed in remained heading.
关键词
煤矿
顶分层
沿空留巷
支护
巷道
Coalfield
Roof bench
Remained heading along goaf
Supporting pattern
