富家矿露天坑保安矿柱回采后,剩余的矿体与主矿体回采后进行充填的混凝土充填体相接触,形成三角矿柱. 结合全面采矿法与房柱采矿法的优点,自行设计了全面房柱采矿法并将其应用于三角矿柱的残采,此方法在回收矿柱中得到了成功的验证. 详细介绍了全面房柱采矿法的采准工程布置、回采工艺过程及技术参数. 实践证明,该方法适应富家矿三角矿柱残采的生产要求,经济技术可行、安全可靠. 同时也为其他矿山底柱的回采提供了宝贵的经验.
After the extraction of safety pillars in the open pit of Fujia Mine,the residual orebody contacts the fill-ing body which takes the place of main orebody,forming a triangular ore pillar. The paper designed a full-scale room and pillar mining method according to the advantages of full-scale mining and room mining methods and applies it to the extraction of triangular ore pillars. The method is verified in the process of ore pillars extraction. The paper elucida-ted the layout of stope preparation work of full-scale room and pillar mining,the stoping process and the technical pa-rameters. Practice proves it meets the production requirement of ore pillars extraction in Fujia Mine,and is economical-ly and technically feasible,safe and reliable. At the same time,the method is worth referring to by sill pillars extraction in other mines.
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