针对安平煤矿15112综放工作面上覆为旧火区的特殊地质条件,分析了发火原因及治理难点,采用了向工作面采空区注氮及地面打孔注浆技术,对火区进行了治理,启封后通过持续向工作面及上覆采空区注氮、工作面上下端头封堵等综合措施,有效的防止了火区复燃,确保了该工作面的正常生产。 In view of the special geological conditions that the 15112 top coal caving face covered the old fire area in Anping Coal Mine, the cause of fire and the difficulties of treatment were analyzed. Nitrogen injection to the gob of the face and ground perforated grouting technique were applied to the fire area After the closure, a series of comprehensive measures such as nitrogen injection to the working face and the overlying goaf, continuous closure of the upper and lower ends of the working face, effectively prevented the resurgence of the fire area and ensured the normal production of the working face.