摘要
水口山矿务局铅锌矿２ ＃ 矿体中Ｗ８０２ 顶柱的上、下部均为大空区，对该顶柱用下向扇形孔回采，取得了较好的效果。文中较详细地介绍了该顶柱回采的爆破设计。
There were large mined-out areas above and under W802 crown pillar in 2 # orebody of Lead-Zinc Mine of Shuikoushan Mining Bureau.This crown pillar was extracted with down fan-pattern holes,achieving good results.The paper introduced the blasting design for recovery of the crown pillar in detail.
出处
《矿业研究与开发》
CAS
1999年第6期12-15,共4页
Mining Research and Development
