留矿法采后间柱回采方法优化研究

为解决留矿法采后形成的采空区处理和间柱回收问题,保障后续生产的安全和间柱资源的回收,本文结合盘龙铅锌矿采空区和矿柱的赋存条件,确定了现有空区的处理方式必须采用充填法处理,仅在独立的小采空区采用封闭空区的处理方法。同时对比分析了三种不同的间柱回采方法,通过优缺点比较最终选择上向水平分层充填采矿法作为间柱回采的主要方法。

Mining Method Optimization of Pillar in Shrinkage Method

At the early stage of the Panlong lead-zinc mine , mining method was used shrinkage stoping method, after that leave a lot of mined-out area and pillars. In order to guarantee the safety of the subsequent production and recycle resources, we must immediately deal with the mined-out area and recycle resources. Combined with the occurrence conditions of the goaf and the pillar, filling method must be adopted in the processing. Analyzed three different pillar stoping method and by comparing the advantages and disadvantages , finally choice the upward horizontal slice stoping and backfilling mining method as a primary method of the pillar stoping.