Fire Area Treatment Technology of Overlying Goaf at Working Face

For the specific conditions of outdoor fire points at overlying goaf of + 6004301 working face in Xinjiang Wudong Coal Mine, through the comprehensive fire preventing and extinguishing techniques including surface loess backfilling, grouting and gel injection and liquid nitrogen injection, the fire area has been effectively controlled, which ensures the safety unsealing and mining of + 6004301 working face.