“丁”字形抬棚在煤矿掘进巷道岔口支护中的应用

在矿井准备巷道施工中,由于要处理被保护层瓦斯,因此在准备巷道施工时每30米施工一个钻场,控顶面积大,采用高支架加穿梁抬棚支护架设复杂同时回撤时丢失严重,因此采用"丁"字形抬棚对其岔口进行支护,抬棚支架由11#工字钢加工而成。

Application ofTLifting Shed in Coal Mine Roadway Fork Supporting

In the mine preparation roadway construction, because the gas in the protected coal seam needs to deal with, the drill sites needs to be established in every 30 meters of the preparation roadway construction. Because the roof control area is large, and the shed supporting frame in the high-bracket is complex and the loss is huge in the retracement, it needs to adopt ＂T＂ lifting shed to support the fork, and the bracket is composed of 11# I beam.