Abstract:For a long time, the gas disaster has been threatening the healthy development of China's coal industry, and caused great casualties and property loss. Gas explosion accident is the main form of gas disaster in coal mine, having the remarkable characteristics such as devastating strong, large economic loss, serious casualtie and so on, and is the most serious type of accident in the coal mine safety production. Aiming at the weak link of the prevention and early-warning system of gas explosion disa...