摘要
对于采用大直径深孔嗣后充填采矿法开采后留设的隔离中段上下均为充填体,为解决充填体下安全回采隔离中段矿体的难题,提出了增设辅助中段,采用大直径深孔和中深孔联合回采隔离中段矿体的研究方案,现场取得采矿损失率小于7%、贫化率小于5%,采场综合生产能力大于750t/d的良好指标,既较好控制了凿岩硐室的稳定性,又保证了高效、经济回采隔离中段矿体。
In some mine, as using large diameter deep hole sto- ping with subsequent filling,the remained interval level lies be- tween upper and lower filling body. In order to ensure the safety of mining under backfill, a way has been advanced to mine the interval level by adding auxiliary level and the combination of large diameter deep hole and middle - deep hole. The good sto- ping indexes have been obtained：the ore loss and dilution ratios are lower than 7% and 5% respectively, overall productive ca- pacity of stope exceeds 750 tons per day. The advanced a way can better control the stability of drilling chamber, but also can ensure the high - efficiency and economic mining of the orebody of remained interval level.
出处
《矿业研究与开发》
CAS
北大核心
2012年第3期4-5,17,共3页
Mining Research and Development
关键词
嗣后充填
隔离中段
辅助中段
联合采矿
凿岩硐室
Subsequent filling, Interval level, Auxiliary level,Combined mining, Drilling chamber
