Research on Fire Prevention and Extinguishing Technology for Shallow Buried Coal Seam Mining Face
In response to the problems of shallow burial depth of the 3305 coal mining face,complex air leakage in the goaf,and small distance between the mining face and the overlying goaf,preventive grouting and nitrogen injection are proposed as the main fire prevention and extinguishing technical measures.The fire warning ability is improved by strengthening monitoring methods,and timely inerting of residual coal in the goaf is achieved by reducing air leakage.Based on the on-site situation of the 3305 coal mining face,a detailed analysis is conducted on the fire prevention and extinguishing technology measures adopted.After on-site application,no signs of residual coal spontaneous combustion were found in the goaf and overlying 2#coal seam goaf during the mining period of the 3305 coal mining face.The fire prevention and extinguishing measures adopted have achieved good results.
coal seam group miningshallow buried coal seamfire prevention and extinguishingleakage cracks
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