补连塔煤矿上覆采空区自然发火治理技术

Spontaneous Combustion Control Technology in Overlying Goaf of Bulianta Coal Mine

补连塔煤矿是神东矿区的典型矿井,其开采方式、产量、煤层自然倾向性、采空区状况等均具有代表性。随着下层煤的开采,在疏放上覆采空水的过程中发生水气置换;下层煤的开采造成地表二次塌陷,漏风裂隙重新形成,均能造成上覆采空区漏风,因此存在自然发火的风险,而上覆采空区存在监测预警难,一旦放生自然发火,寻找火源点难、治理难的特征。总结补连塔煤矿22煤三盘区上覆采空区出现自然发火后,采取的治理技术和措施,以及取得的效果。

Bulianta Coal Mine is a typical coal mine in Shendong Mining Area, and the mining method, natural tendency of coal seam, production status, goaf situation are representative. With the mining of lower coal, water and air replacement is occutxed in the process of draining overlying goaf water; mining lower coal causes the second collapse of surface and reforms air Leakage cracks to cause air leakage in overlying goaf, so there is a risk of spontaneous combustion in goaf. Due to the characteristics that it is difficult to monitor and early warning and find out and control fire sources in overlying goaf once the spontaneous combustion is appeared, the paper summarizes the control techniques and measures after the spontaneous combustion in 22^# coal of the third panel overlying mined-out area.