在新柳煤矿交子里轨道大巷掘进中应用中深孔爆破一次成巷,使队组掘进速度比以前提高了近一倍,月进度从以前的40～50m提高到90～100m。巷道掘进成型效果明显改善。 The application of medium-deep borehole blasting to the laneway excavation in Xinyu coal mine intersection made the team and group excavation speed nearly doubled than before, and the monthly progress was increased from 40-50m to 90-100m. Roadway tunneling forming effect is obviously improved.