“小台阶施工”在大断面煤巷掘进中的应用

Application of "Small Bench Construction" in Heading Excavation of Large Section

在常村煤矿23区运煤巷,创新采用小台阶施工工艺,将大断面巷道的煤壁自上而下一分为二,大大降低了煤壁片帮的危险,保证了安全生产。同时,因简化了施工工序,提高了掘进工效和掘进进度,为实现矿井高产高效发挥了重要作用。

In roadway of 23 Area, Changcun Colliery, separating the large section of roadway into two from top to bottom, small bench construction technology has been adopted to greatly reduce the risk of rib spalling and guarantee the safety production, which plays an important role for achieving high yield and efficiency of mine by improved tunneling efficiency and progress at the same time because of the simple construction progress.