软岩巷道联合支护方式在生产中应用

Application of roadway combination support in soft rock

论述了软岩巷道支护的重要性和目前常用的软岩巷道支护方法。并着重介绍了淮南八里塘煤矿-340水平的运输大巷和回风大巷布置在粉砂岩和泥岩组成的岩层中,支护方式采用锚喷——U型钢架联合支护,由于岩层地应力大,岩体破碎,支护破坏严重,制约了掘进速度,给安全生产带来了较大的威胁。通过支护方式和施工方法的改进,两条大巷取得了良好的效果。

The importance and methods about roadway support in soft rock are discussed. The main haulage roadway and main return roadway are laid out in the rock seams consisting of siltstone and mudstone in the -340 level of Huainnan Balitang Colliery, and the support is bolted and shotcreted. As the stress in rock seams is high and the rock seams are broken, so the roadways are destroyed severely, the tunneling velocity is low, and it is harmful to production. After the supports and construction methods are improved, the two roadways are supported well.