中国矿山工程

The sublevel stoping with post filling method has been continuously improved in the operation of Tongshankou Copper Mine, both in mining and backfilling. The method was applied consecutively in 6 stopes at Level -160m, with operation indicators markedly improved: ratio of cutting/preliminary development and mining tonnage reduced by 17m3/kt, overall dilution and loss rates reduced by 2.23% and 2.42%, stope production capacity improved by 80.5t/d, direct cost of stope operation reduced by 44.2 yuan/t. The optimization thus serves as a good reference for the promotion of the mining method.