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根据千秋煤矿21012综采工作面封闭火区的特点及启封防灭火所面临的困难，应用聚氨酯泡沫材料对该工作面综采支架间隙及两个端头进行喷涂堵漏。为极易自燃煤层综采面火区启封防止采空区原火区复燃，保证工作面正常恢复生产，创造了一次成功经验。
According to the characteristics of the closed fire area of 21012 fully mechanized mining face in Chiaki Coal Mine and the difficulties of opening fire prevention and extinguishing, urethane foam was used to spray and plug the gap of the fully mechanized mining support and the two ends. For the extremely easy to spontaneous combustion coal seam fully mechanized face fire area unsealing to prevent the original area of the goaf rekindle, to ensure the normal face to resume production, created a successful experience.