Research on gas grading control method of coal roadway heading face in high gas mine

With the increase of mining depth and mining intensity, the intensification of mining is getting higher and higher, and the severity of gas disasters is increasing.Gas control has become a major factor restricting safe and efficient production in coal roadway excavation in high-gas mines.At the same time, due to the large area of the mine field, the gas occurrence and geological structure changes greatly in different regions, and the fixed gas control method adopted at the heading face seriously affects the mining replacement of the mine.In this paper, through collecting and sorting out the gas control methods in the coal roadway of the high-gas mine heading face on site, and after full demonstration, the gas classification control method in the coal roadway heading face of the high-gas mine is put forward, which adopts different gas control measures according to different gas disaster levels and provides technical guarantee for the safe and efficient operation of the underground heading face.