多变空区处理协同П型矿柱回采新技术应用

Application of New Technology for Variable Goaf Treatment in Coordination with П-Shape Pillar Recovery

针对全面回采河南某小型地下金矿遗留"П型矿柱"和协同处理空区的需要,对空区处理和矿柱回采的技术原则和制约因素进行了研究,提出了胶结充填空区后多类炮孔组合爆破回采"П型矿柱"的方法,在典型区域开展现场工业试验,区域内实现了充填处理空区和回采间柱的双重目的,最终获得了87%的矿柱回采率和95%空区处理率的良好效果。

According to the need of comprehensive recovery of П-shape pillars and the coordinated treatment of goaf in a small underground gold mine in Henan province,the technical principles and restrictive factors for goaf treatment and pillar recovery were studied.And the method of combined blasting in multi-type blasting holes after cemented filling of goaf was put forward forП-shape pillar recovery.Field work was carried out in typical areas,and the results showed that the dual purposes of filling the goaf and recovering the pillars were realized,and good results were achieved with pillar recovery of 87%and goaf treatment rate of 95%.