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2001年以来,西安煤矿在六区对巷道支护形式进行了木梯形棚——工字钢梯形棚——U型钢可缩性拱棚的改革更新。由于U型拱棚钢铁化的普及使用,减少了掘进巷道后路恢复翻挑维修,消除了掘进后路关门的最大隐患,相对加快了掘进一次成巷的速度,同时也减少了采煤两道的维修恢复,大大降低了成本,也给采掘工程量和安全生产提供了可靠保障。企业收到相当好的经济效益,具体有以下几个特点。
Since 2001, Xi’an Coal Mine carried out the transformation of the tunnel support form of wooden trapezoidal shed - I-shaped trapezoidal shed - U steel retractable arch shed in six districts. Due to the popularity of U-shaped steel tents, reducing the roadway backhoe recovery to repair, eliminating the road behind the tunneling the biggest hidden dangers, relative to speed up the tunneling a lane into the lane, but also reduces the two coal Maintenance and recovery, greatly reducing costs, but also to excavation volume and safety production to provide a reliable guarantee. Enterprises have received quite good economic benefits, specifically the following features.