黄陵二号煤矿409工作面回风巷受损原因分析

Analysis on the damage reasons of the return in №409 mining face of Huangling №2 Coal Mine

黄陵二号煤矿409工作面回风巷为复用巷道,在上一个面回采后对巷道进行封闭,半年以后起封拉底至3联巷以里巷道出现局部冒顶,原有支护受损严重。本文就巷道受损情况进行了分析,并提出了针对性的建议。

The return of №409 mining face is multiplexing roadway which was sealed after the last face was mined. Half a year later,when the sealed roadway was unsealed,the original supporting was badly damaged and local roof falling appeared. The paper analyzed the causes of roadway damage and proposed some measures and suggestions.