The effective measures to control the vibration and fly rocks were adopted to successfully perform the application of large hole in shallow hole controlled blasting.
采用有效措施，对震动和飞石进行了控制，成功地完成了大孔在浅孔控制爆破中的应。
The blasting hole arrangement of hard ductility rocks in the roadway excavation is discussed and explosive loading coefficient is determined.
介绍了该矿传统掘进凿岩爆破方法，详细阐述了该矿硬韧性岩的巷道掘进炮眼布设及装药系数的确定。
Because of frequent activities in ancient volcanic mountain area, presents unique peak, column, pier, the hole, wall etc odd rocks is basically a modelling step, geomorphic museum.
由于处在古火山频繁活动的地带，山体呈现出独具特色的峰、柱、墩、洞、壁等奇岩怪石，称得上是一个造型地貌博物馆。
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