Fire Prevention and Extinguishing Technology at Super-long Fully Mechanized Caving Face Under Complex Conditions

Through adopting targeted comprehensive fire prevention and extinguishing technology such as ventilation mode, plugging air leakage, nitrogen injection and preventive grouting and other technologies at different stages, the spontaneous combustion at 011604 super-long fully mechanized caving face is effectively prevented, which prevents harmful gas invasion from upper 9^# coal seam small pit high temperature zone and ensures the smooth production of mine safety.