The treatment of mine waste rock at underground

The conventional mining causes the mining subsidence and at the same time a refuse heap arises on the ground.Both con harm the environment seriously,and give the coal mine itself and society a series of problems.To solve the problems,a way of the clear mining is put forward,that is,the refuse is not taken out of a coal mine and immediately stowed underground.The way makes the refuse heap disappear and the mining subsidence decrease.Through analyses,its environmental benefits,economic benefits and social benefits are notable.The proposal is to take measures,and test and popularite it.To stow the refuse underground immediately is of benefit to sustainable development.