天马山硫金矿床采空区矿柱回采工程研究与实践

摘要

天马山硫金矿床井下空区数量较多,空区内留设了大量矿柱.为安全有效地回收这部分资源,通过对采空区的地质环境和现状调查,依据地压监测成果,采用数值模拟分析手段,对井下最大的新1 #矿柱回采方案进行论证,并在井下顺利实施,在保证安全的前提下,回收矿石8.2万t,取得较好的经济效益,同时为本矿段其他矿柱的回收积累了经验.%There are quantities of underground goaf in Tianmashan sulfur gold deposit,and lots of ore pillars are left in the goaf.In order to safely and effectively recover these parts of resources,through investigations on the geological environment and status of the mined-out area,and according to the ground pressure monitoring results,the numerical simulation method is adopted to demonstrate the new stoping scheme for the largest underground #1 ore pillar,which is implemented successfully.On the premise of ensuring the safety,good economic benefits with ore recovery of 82,000 t have been obtained,and the research provides experiences for the recovery of other pillars in this section as well.