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在详细分析大广山矿一期开采残留矿柱分布特征基础上 ,提出了崩落法结合受矿漏斗出矿的联合矿柱回采法 ,即先人工崩落矿柱 ,利用放矿漏斗在覆盖岩层下集中放矿。对分布矿柱回收工程的 17m厚预留矿体隔层的稳定性和生产可靠性进行了分析评价。经济分析评价结果说明矿柱回收工程具有较好的社会效益和经济效益。
Based on the detailed analysis of the distribution characteristics of the residual ore column in the first stage of the Daguangshan Mine, the coal mining method using the coal mining method with the caving method is proposed. Focus on the mine. The stability and production reliability of 17m thick reserved orebodies in the distribution pillar recovery project were analyzed and evaluated. Economic analysis and evaluation results show that pillar recovery project has good social and economic benefits.