摘要
对地下矿山无底柱分段崩落采矿回采过程中,进路采矿爆破悬顶或立槽现象产生的原因进行分析;并通过YGZ-90钻机平行、倾斜进路施工倾斜扇面孔,微差爆破处理。实践证明,这种处理方法既高效又安全,可以在无底柱分段崩落采矿工艺中广泛应用。
In the stoping of using sublevel caving without sill pillar method,the reason of causing hanging roof and vertical channel in blasting was analyzed,and it was treated through drilling parallel and inclined fan holes by using YGZ-90 drill and the millisecond blasting technique. The practice proved that these methods were both efficiency and safety,and can be widely used in sublevel caving without sill pillar method.
出处
《中国矿山工程》
2014年第2期35-37,共3页
China Mine Engineering
关键词
悬顶
原因
倾斜扇面孔
爆破
hanging roof
reason
inclined fan holes
blasting
