Fire Preventing and Extinguishing Technique of Working Face in Shallow Buried and Flammable Thick Coal Seam

In view of the problems of fire prevention and control in shallow buried and in flammable thick seam of the working face, taking 51103 fully mechanized coal caving mining face of Guojiawan Coal Mine as an example, the paper comprehensively analyzes the dangerous factors of residual coal in goaf, establishes the prediction and forecast system by the means of the gas and temperature monitoring, the comprehensive technology of fire prevention and extinguishment is provided with “sealing air leakage, preventive grouting, low flow nitrogen injection”, which provides preciously practical experience for the safety mining of the working face of shallow buried and flammable thick coal seam.