Abstract:
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 occurred 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.