Fire Prevention and Extinguishing Technology During Excavation of Return Air Roadway in 8306 Isolated Working Face of Wangping Coal Mine
In response to the hidden danger of spontaneous combustion such as many residual coal,cracks in small coal pillars and air leakage during the excavation of small coal pillars along the goaf in Wangping Coal Mine of Jinneng Holding Coal Industry Group,a series of fire prevention and extinguishing technology plans are proposed,including spraying,nitrogen injection,gas volume fraction and pressure difference monitoring,and practical application on site,achieving good fire prevention and extinguishing effects.This ensures the safe excavation of the small coal pillar along the goaf roadway in the 8306 isolated working face,and can provide experience for the development of fire prevention and extinguishing work in the excavation working face of other mines.
CracksSprayingNitrogen injectionDifferential pressure monitoringFire prevention and extinguishing
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