双循环爆破技术在煤矿巷道快速掘进中的应用

Application of double circulation blasting technology in rapid tunneling of coal mine roadway

通过分析影响巷道掘进效率的因素,推荐采用双循环爆破技术,并介绍了双循环爆破的相关参数。运用双循环爆破技术下山锚网喷巷道掘进每班进尺突破1.9 m,极大地提高煤矿巷道掘进的效率。

By analyzing the factors affecting the efficiency of roadway excavation,the double circulation blasting technology was recommended,and the relevant parameters of double circulation blasting were introduced.By using the double circulation blasting technology in bolt-mesh-spouting supporting roadway,the footage per shift exceeded 1.9 m,which greatly improves the efficiency of roadway excavation in coal mines.