Coal is the main energy resources in China and it accounts for 76% totally. At present the annual output of raw coal in China is 1.324 billion ton. The apparent characteristics of mine production is underground operation, affected by geological conditions, geological structures and coal seam construction, and the disaster such as coal dust, methane, water, and roof collapse are liable to occur under the mining process and seriously imperil the mining safety and life of miners. As matters stand, the death ra...