Comprehensive Fire Prevention and Control Technology for High Gas and Easy spontaneous Combustion Thick Seam in Binchang Dafoshi Coal Mine

Based on the measured divided of "three zones" in goaf and coal sample oxygen inhalation and adiabatic oxidation characteristics analysis of inflammable high gas extra-thick 4^# seam, the paper selected residual coal spontaneous combustion index gas including CO, C₂H₄, C₂H₂, and calculated the working face minimum advancing speed of 6.2 m/d, and built integrated anti-extinguishing medium perfusion system including joint grouting, injection inert gas, plastic injection and perfusion phase bubble, which provides theoretical and technical support for the safe and efficient recovery of the mining face.