Abstract:
According to the actual situation of more residual coal, large amount of air leakage, long cycle, high risk of spontaneous combustion in goaf of fully mechanized caving face during terminal mining and withdrawal period which threats the safety production of face seriously. Based on the analysis of characteristics of spontaneous combustion at fully mechanized caving face, the spontaneous combustion danger zones of 2103 working face were determined and spontaneous combustion control technology including spontaneous combustion prediction technology, fire proof technology by equalizing pressure and nitrogen injection against fire was formed. Combined with the application of spontaneous emergency support technology, the occurrence of spontaneous combustion accidents was prevented effectively during terminal mining and withdrawal period.