望儿山金矿中深孔采场底柱回收方案探讨

Discussion on recovery scheme of bottom pillar in medium-deep hole stope of wangershan gold mine

随着生产的进行,望儿山金矿中深孔采场回采结束,需要对所预留的底柱进行回收。如何安全高效的回收底柱是摆在矿山面前的一大难题。同时底柱回收方案决定着采场一分段的采矿方法。本文提出了三种方案,一是进路施工中深孔采场第一分层并铺设假底,进路法回收底柱;二是中深孔采场直接崩落,进路法回收底柱;三是中深孔采场直接崩落,崩落法回收底柱。通过经济效益及安全性对比决定采用中深孔采场直接崩落,崩落法回收底柱。

As production proceeds,the mining of medium-deep hole stope in wangershan gold mine is over,need to recycle the reserved bottom column,how to safely and efficiently recover the bottom pillar is a big problem in front of the mine,the bottom pillar recovery scheme determines the mining method of the section one stop.Three schemes are proposed in this paper,firstly,the first layer of deep-hole stope is laid with false bottom in road construction,recovery of bottom pillar by route method;the second is the direct caving of medium-deep hole stope,recovery of bottom pillar by route method;third,the direct caving of medium-deep hole stope,recovery of bottom pillar by route method.Through the comparison of economic benefit and safety,it is decided to adopt medium-deep hole stope caving directly,recovery of bottom pillar by route method.