依据潘一矿煤层地质条件和瓦斯赋存特性,阐述了地面钻井抽采卸压瓦斯的设计思路,分别对煤岩采动期、恢复期和稳定期内的现场瓦斯抽采参数及其动态变化规律进行分析。现场试验结果表明,地面钻井在336 d内共抽采瓦斯量200万m3以上,抽采半径达211 m,抽采瓦斯浓度在90%以上,对应块段的煤层瓦斯排出率为41%。 Based on the geological conditions and gas occurrence characteristics of coal seam in Panyi coal mine, the design ideas of gas drainage for ground drilling are expounded. The gas drainage parameters and its dynamic changes during the recovery, Regularity analysis. The field test results show that the total gas drainage volume of ground drilling is more than 2 million m3 within 336 days, the extraction radius is 211 m, the drainage gas concentration is above 90%, and the methane emission rate corresponding to block is 41%.