Abstract: Spontaneous combustion in 6112 working face goaf of Haishiwan Coal Mine ignited the oil and gas collapsed to the goaf area from upper oil sand rock, which rapidly expanded for mineral fire. Using the method of injecting mass flow of gas nitrogen, liquid nitrogen and carbon dioxide, suppressing gas explosion, safely closed 6 wellheads, and adopting the sealing technology and mass flow and high-pressure water gun cooling technology, the fire area from the wellhead is sealed to the working face, and the fire channel grouting fire extinguishing technology is used to completely extinguish the fire. We introduce the emergency rescue and disaster relief in the process of explosion suppression sealing technology, sealing technology, fire channel fire extinguishing technology and fire extinguishing effect.