Application and improvement of shallowblasting shrinkage stoping in Maojiazhai mine

Based on analysing mine-body characteristics,production status,and mining conduction of Malanjkhand copper mine,compared VCR method with non-sill pillar sublevel 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.