摘要
大吉山矿区南组东翼矿岩内断层、节理等构造发育,矿岩稳固性差。采用浅眼留矿法回采时,采场片帮与垮塌情况严重,上采高度难于达到阶段高50 m,采场回采率低,矿石损失率较大。通过长期的生产实践与探索,采取了以低中段为主的技术措施,取得了明显的效果。
The poor ore rock stability in the eastern part of Southern Dajishan Mine stemmed from the fault and joint geologic formation. Wall caving and collapse were frequent with shallow-hole mining method, which led to low mining rate and high ore loss rate. The mining technology of focusing on the low and middle section was applied with satisfying mining effects
出处
《中国钨业》
CAS
2009年第6期14-16,共3页
China Tungsten Industry
关键词
脉钨矿
片帮
垮塌
低中段
浅眼留矿法
veined tungsten mine
wall caving
collapse
low and middle section mining
shallow-hole mining method
