掏槽方法使用期间，可通过对掏槽的高度、炮眼的深度及装药量的多少等因素的调整，来达到有控制地释放瓦斯的目的。
In the period of cutting method using, may achieve to control gas emission by adjusting the factors of cutting height, and depth and charge of artillery eye.
周边炮眼的装药集中度应当尽可能小一点。
The charge concentration in the contour holes should be as small as possible.
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。
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。
The blasting hole arrangement of hard ductility rocks in the roadway excavation is discussed and explosive loading coefficient is determined.
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