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应用控制爆破,提高岩石巷道施工的爆破效率,加快掘进岩石巷施工速度、介绍张新煤矿打开西三/1#层新采区,211掘进队施工的,西三/1#层风道下山创出全岩下山月进尺180m,科学施工方法。
The application of controlled blasting can improve blasting efficiency of rock roadway construction and speed up the construction of rock roadway. Introducing the construction of No.2 / No.3 mining area in Zhangxin Coal Mine and the construction of No. 211 Tunneling Team, The whole rock down the mountain into the foot 180m, scientific methods of construction.