石港煤矿煤与瓦斯共采技术研究

With the increase of deep mining in coal mine, gas content and gas pressure of coal seam increase, and the amount of gas emission also increases in the process of mining, gas issue has become one of the key factors restricting yield and safety production of coal mine. In recent years ," simultaneous extraction of coal and gas technology" are widely used to solve gas problems when deep mining by methods of methane extraction before coal mining and their mutual promotion. In this paper, basic principle of simultaneous extraction of coal and gas in shigang coal mine is described.And it summarizes the simultaneous extraction mode of coal and gas for the 15th coal seam which is the first mined seam in Shigang coal mine, and space time evolution regularity of gas drainage technology implementation through analyzing the gas occurrence conditions and distribution of coal seams in yangquan mining area.