横撑支柱留矿采矿法在某金矿的应用

Application of brace pillar shrinkage-stopping method in a gold mine

留矿采矿法是我国地下开采矿山中使用最早、应用范围最广的采矿方法之一,在我国地下开采矿山生产中占有较大的比重.针对某金矿矿床开采存在的围岩片帮问题,采用了横撑支柱留矿采矿法,介绍了横撑支柱留矿法的矿块结构、回采工艺、采空区管理.该方法减少了围岩的片帮事故,保证了作业安全;降低了矿石的贫化率,提高了出矿品位.

Shrinkage - stopping method is one of the underground mining methods, which is used the earliest and most widely, and takes a great proportion in this country. In view of the problems with the surrounding rock rib spalling, a brace pillar shrinkage-stopping method was adopted, and the block structure, mining and recovery techniques, and goal management for the method are described. The method reduces the rock rib spalling accident, and assures the operation safety. Furthermore, it can greatly reduces the dilution rate of the ores, and enhances the grade of the mined ores.