Application of parallel boosting fire prevention and extinguishing technology in the unsealing and backfilling of coal mining faces
The A3 coal seam of the sixth mine of Xukuang Group Xinjiang Sail Energy Co.,Ltd.has a shallow burial depth,and the A3015 fully-mechanized mining face is a thick coal seam that is prone to spontaneous combustion.Due to the influence of mining,cracks appear on the surface,forming air leakage channels in the goaf.A large amount of fresh air quickly flows into the goaf through the surface cracks,providing oxygen for the remaining coal.There is a hidden danger of spontaneous combustion of the remaining coal in the goaf during the mining period of the working face.Comprehensive fire prevention and extinguishing technology measures such as ni-trogen injection and pressure equalization are taken to control the spontaneous combustion of residual coal in the goaf and achieve the expected effect.
parallel boostingnitrogen injectionunsealingfire prevention and extinguishing
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