寸草塔二矿31102辅运顺槽冒顶处理方案

Caving treatment scheme of 31102 mine auxiliary transport entry in Cuncao tower NO.2 mine

寸草塔二矿31102辅运顺槽12联巷突然矿压显现强烈,造成巷道顶板冒落,破坏的巷道需进行重新支护。采用密集锚索支护和巷道喷浆,保证巷道顶板稳定;通过FLAC3D数值模拟软件对巷道支护进行模拟,结果显示:巷道顶板下沉量和两帮移近量均较小,且巷道两帮水平应力为负,说明巷道表面的煤不受拉应力,不存在继续片帮、冒顶的倾向。

The strata behaviors is strong in 31102 Auxiliary transport entry of Cuncaota No.2 Caol Mine, which causedthe roof caving. Destruction of the roadway need to be re suppor, the gateway need to anchor densely and Shotcret,ensuring Roadway roof Stability, In order to verify the reasonableness of this design ,FLAC3D numerical simulationsoftware was used, The result shows that roof subsidence and two-sided displacement are so small, And the horizontalstresses are under zero, it shows that the coal is not affected by tensile stress on the surface of the roadway , There isno tendency for roadway spalling and roof fall.