The fire is one of the five major disasters which seriously affect the safe production of the mine, and the spontaneous combustion of the coal in the goaf is the most important factor in the mine fire. Based on the analysis of the characteristics and factors of spontaneous combustion in the goaf,it is pointed out that the closed air-leakage channel is the key to reducing the possibility of spontaneous combustion of the coal seam in the working face,and the three-in-one anti-fire-fighting scheme of“reducing,injecting and clos. ing”is analyzed. The problems of large external displacement of the coal-fired stone,the number of old and old tunnels and the small space between the coal seams and the like are difficult,and a fire-fighting method for filling the adjacent waste roadway with the coal-fired stone is put forward. The practice proves that the method has the advantages that the coal-fired stone is used for filling the adjacent waste roadway,not only the underground treatment of the gaugnue is realized,the surface ecological environment is improved,the roof of the roadway is effectively restrained from sinking and the surface subsidence is effectively restrained,and meanwhile,the complete dense filling of the roadway can be used for plugging the air leakage passage of the goaf,improving that ventilation condition of the goaf,reducing the spontaneous combustion rate of the float. ing coal in the goaf,and providing reference for a similar mine to do the fire prevention work.
Shenhua Science and Technology
Fire prevention and extinguishing