中深孔微差挤压爆破法回采顶柱的实践

Practice of top pillar stoping with medium-length hole millisecond compression blasting technology

针对河台金矿云西矿区顶柱开采技术条件,选择了中深孔爆破法回采方案。详述了中深孔爆破参数和爆破工艺。多排同段大药量微差挤压爆破技术的应用,有效地降低了顶柱回采生产成本,提高了生产能力,取得了较好的技术经济效果。

Aiming at the technical conditions of top pillar stoping in Yunxi mining area of Hetai gold mine,the medium-length hole blasting method is chosen for ore stoping.The paper describes the medium-length hole blasting parameters and schemes.Multi-row,simultaneity and large-dose millisecond compression blasting technology is applied.The production cost of top pillar stoping is cut,while the production capacity is enhanced.Good technical and economical effects are obtained.