为防止高瓦斯矿井自燃煤层在瓦斯抽采过程中发生煤层自然发火,需对瓦斯抽放钻孔内的气体定期检测,对钻孔内CO变化规律进行分析。结合高浓度CO钻孔位置及其与周边采空区、火区分布关系,利用示踪气体测漏风和施工钻孔监测相邻采空区CO气体变化等措施,验证CO来源,判断采空区自然发火状态。 In order to prevent spontaneous combustion of spontaneous coal seams in spontaneous combustion coal seam of gas gassy mine, the gas in gas drainage borehole needs to be periodically inspected and the CO variation in borehole analyzed. Combined with the high-concentration CO drilling location and its relationship with the surrounding goaf, the distribution of fire area, the use of tracer gas leak detection and construction drilling to monitor changes in the adjacent gob CO gas and other measures to verify the CO source to determine the goaf Natural state of fire.