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常村煤矿综放工作面采用外错瓦排巷的方式,巷道变形量大。文章经过理论分析、数值计算等方式确定了合理的煤柱尺寸留设,采用全断面锚索支护的方式在常村矿井下瓦排巷进行了试验,放大了锚索的间排距,大大减少了锚索的长度,高强度、强力全断锚索支护技术真正实现了主动支护作用,充分发挥了围岩的自承能力;矿压监测数据分析显示,巷道变形得到了有效的控制,两帮移近量比原支护方式降低了90%以上,顶板离层基本无离层,顶底板移近量也明显减小,井下试验验证了该支护系统的科学性和合理性。
Changcun coal mine fully mechanized caving face outside the use of staggered way, big deformation of the roadway. After the theoretical analysis and numerical calculation, the reasonable size of coal pillar is determined, and the method of full-face anchor cable support is used to test the underground tile drainage laneway in Changcun Mine. The spacing between the anchor cables is enlarged greatly Reduce the length of the anchor cable, high strength, strong full broken anchor cable support technology truly realize the role of active support, give full play to the rock around the bearing capacity; mine pressure monitoring data show that the tunnel deformation has been effectively controlled , The amount of the two approaches is reduced by more than 90% compared with the original support method. The separation of roof and roof from the floor is basically no. The amount of displacement near the roof and floor is also obviously reduced. The downhole test verifies the scientificity and rationality of the support system.