(1) The method of falling mine can be divided into: 1, the drilling and blasting method: use more non-coal mines. 2. Mechanical mining method: use soft ore or coal mine with f<3-4. 3, the hydraulic mine off method: mining of coal, manganese, bauxite and other soft soft frangible seam 4. Dissolved mining method: mining salt deposits 5, leaching mining method: for the extraction of copper, uranium, gold and silver mining. (2) Mining methods According to different methods of surrounding rock and ground pressure management, the mining method is divided into empty field mining method, filling mining method and caving mining method.
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