Abstract:
In view of the problem that roadway driving near goaf is prone to spontaneous combustion in layered mining of extra-thick rockburst coal seam, taking the roadway driving face with the roadway-protecting process of small coal pillars in 250209
upper of a mine as the research object, the contradiction between rockburst prevention and fire extinguishing is analyzed, and the characteristics of fire prevention and extinguishing in roadway driving near goaf are obtained.A set of comprehensive fire prevention and extinguishing technology of “plugging-oxygen control-cooling” is put forward.By optimizing the width of coal pillar, shotcreting in key areas, wall pouring and reinforcement, yellow mud grouting, nitrogen injection and other measures, the risk of spontaneous combustion in roadway driving near the goaf is effectively reduced, and the roadway driving safety under the double risk of rock burst and spontaneous combustion in coal seam is realized.