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为降低回采工作面采空区以及邻近层瓦斯涌出，对采面高位瓦斯抽采系统进行优化，具体措施为增加瓦斯泵抽采能力、优化钻孔布置参数、增加布置水闸分离器等。现场应用后，瓦斯抽采管路瓦斯抽采浓度由 2.5%增加至 10.8%、抽采纯量 1.5m3/min 增加至 6.3m3/min，回风上隅角瓦斯浓度控制在 0.4% 以内；同时优化有的抽采系统预计可满足矿井后续 10a 瓦斯抽采需要。“,”In order to reduce the gas emission in the goaf and adjacent layers of the working face, the high-level gas drainage system of the working face is optimized. The specific measures are to increase the gas pumping capacity, optimize the drilling layout parameters, and increase the arrangement of sluice separators, etc. . After the field application, the gas drainage concentration of the gas drainage pipeline was increased from 2.5% to 10.8%, the scalar amount of drainage increased from 1.5m3/min to 6.3m3/min, and the gas concentration in the upper corner of the return air was controlled within 0.4%；at the same time；Some optimized drainage systems are expected to meet the mine’s subsequent 10a gas drainage needs.