大水金矿水平巷道断面爆破设计

结合大水金矿矿山地质和水文地质,水平巷道断面形式优先选用三心圆拱形,根据断面结构,合理采用打眼设备、断面布孔方式、炸药种类和爆破参数,使爆破效果达到最佳的同时节约炸药用量和炮孔数量。实践证明,大水金矿水平巷道掘进爆破,在起爆过程中,爆破危害能够得到有效控制。

Section blasting design of horizontal roadway in Dashui gold mine

In combination with the geology and hydrogeology of Dashui gold mine,the three center round arch is preferred for the cross-section form of horizontal roadway.According to the cross-section structure,the drilling equipment,cross-section hole arrangement,explosive types and blasting parameters are reasonably adopted,so as to achieve the best blasting effect and save the explosive amount and the number of holes.It has been proved by practice that the damage of blasting can be effectively controlled in the process of blasting.