以凤凰煤矿1402采煤工作面为工程应用背景,运用岩层移动理论,研究了采煤工作面大流量、高浓度卸压瓦斯的运移路径和富集区域;通过选择合理的瓦斯抽采方法,优化瓦斯抽采关键参数,提高了采煤工作面瓦斯抽采率和抽采浓度,实现了采煤工作面瓦斯抽采达标;降低了采煤工作面瓦斯涌出量,消除了采煤工作面瓦斯积聚现象,保证了采煤工作面安全高效生产。 Taking the coal mining face 1402 in Fenghuang coal mine as the engineering application background, using the theory of rock movement, the migration path and enrichment area of ​​large flow and high concentration pressure relief gas in coal mining face were studied. By choosing reasonable gas drainage method, Optimized the key parameters of gas drainage, improved the gas drainage rate and pumping concentration of coalface, and achieved the goal of gas drainage in coalface; reduced gas emission from coalface and eliminated coalface Gas accumulation, to ensure safe and efficient production of coal mining face.