印度Malanjhkhand铜矿露天转地下采矿方法研究

摘要

在分析Malanjkhand铜矿矿体特征、生产现状及开采技术条件的基础上,通过对VCR采矿 法、无底柱分段崩落法及阶段强制崩落法进行技术经济比较,选用无底柱分段崩落法作为该矿露天转地下的采矿方法,同时优化了无底柱分段崩落法的结构参数,从而减小采切工程量、降低了损失贫化.%Based on analysing mine-body characteristics, production status, and mining conduction of Malanjkhand copper mine, compared VCR method with non-sill pillar su,blevel caving method and block forced caving method,confirmed that non-sill pillar sublevel caving method are used for open pit mining to underground mining, optimizing structural parameters of non-sill pillar sublevel caving method, decreasing the engineering quantity of stoping and cutting, reducing loose and dilution.