新城金矿阶段空场嗣后充填法开采大直径深孔切槽爆破方法

郭良银,蒋万飞,宋召法,刘晓光,张金超

Large Diameter Long Hole Cutoff Slot Blasting Method for Sublevel Open Stoping with Delayed Filling in Xincheng Gold Mine

Liangyin GUO,Wanfei JIANG,Zhaofa SONG,Xiaoguang LIU,Jinchao ZHANG

图6 “品”字形切槽爆破顺序

Fig.6 Blasting sequence of “Pin”-shaped slot