Influence Degree Analysis of Safety Mining of Coal Face Under Coalfield Fire Area

Aiming at the current status of 7-1(Ⅲ) coal field fire area in Huangbaici Coal Mine 021205 working face, the safety mining impact analysis of coal mining face under the coal field fire area was carried out. By analyzing the positional relationship between 021205 working face and overburden 7-1(Ⅲ) coal field fire zone and the mutual distance between the coal seams, the empirical formula and the “three-under” mining calculation formula are used to calculate the maximum height of the fall zone and the fracture zone of 021205 working face during mining. It was concluded that 021205 working face will not be threatened by open flames in 7-1(Ⅲ) coal field fire zone, and will not be invaded by toxic and harmful gases in 7-1(Ⅲ) coal field fire zone. However, in order to ensure the safe mining of 021205 working face and other mining-ready working faces, it is still necessary to monitor the surrounding goaf and control 7-1(Ⅲ) coalfield fire area.