一次起爆技术在岩巷施工中的应用

Application of One Blasting Technology in Rock Roadway Construction

在分析西铭煤矿开掘瓦斯管道岩巷原采用分次爆破造成炮孔布置多、爆破时间长、安全隐患多、爆破效果差等原因的基础上,针对巷道岩性特性、断面大小进行炮眼数目,爆破网络优化与施工研究。着重介绍了岩巷爆破设计与施工,实现了全断面深孔一次起爆,取得了明显的经济技术效益。

Graded blasting used in gas drainage rock roadway of Ximing mine has caused many problems, including many holes, long time, safety hazards and poor effects. The roadway features, cross-section size, the blasting hole number and network are optimized and studied. The design and construction are focused and one-blasting of full face is realized, which achieved notable economic and technological benefits.