摘要
板石矿业公司井下矿17#矿组属于中厚以下矿体,采用无底柱分段崩落法开采,存在着矿石损失、贫化率较大的难题。经过分析和研究,对10 m以下中厚矿体采用分段凿岩、阶段空场出矿法开采,可以提高矿石回采率和减少矿石损失、贫化。对矿产资源的有效利用和提高矿山经济效益具有重要意义。
No. 17 underground stope of ganshi Mining Company belongs to middle-- thick ore body that are mined with pillarless subdrift caving method. The usual trouble in mining activity is high loss of ore and high rate of depletion. According to result of analysis ＆ research, the decision is made to adopt section--wise drilling and section--wise open stoping method to the middle--thick ore body below 18m level. The method brings advantages of high ore recovery rate, low loss of ore and low rate of depletion thus increases utilization rate of resource and economical profit of mine.
出处
《矿业工程》
CAS
2009年第1期20-22,共3页
Mining Engineering
关键词
无底柱空场采矿法
顶柱
分段凿岩
阶段空场出矿
pillarless open stope method
cap pillar
section--wise drilling
section--wise open stoping method
