小上山、短上水平残矿回采实践

Remnant ore recovery with small uphill and short upper horizontal tunnel

矿产资源有限,最大限度地回收矿产资源是矿山开采技术研究的重要课题。以大栗子矿业公司东风矿井下160 m中段661采场、662采场间柱回采为例,介绍了东风矿160 m中段老区采场间柱的回采方法:采用浅孔凿岩落矿,利用老区渣源小区域充填,以小上山、短上水平开采工艺回采间柱矿石,回采率达到82%,取得了很好效果,为金属矿山残矿回采提供了新思路。

To recover mineral resources at the maximum limit is an important subject in mining technology research.With the No.661 and No.662 stope in 160 m sublevel of Dongfeng mine as example,the stoping method of remnant ore in spacer pillars is introduced.With shallow-hole drilling and former slag source area backfilling,the spacer pillar ore is stoped with small uphill and short upper horizontal tunnel.The recovery rate is 82 %,which provides a new approach to recover remnant ore.