Coal mine gas extraction is a common means to prevent and control gas disasters, and improving the efficiency of gas extraction and improving the gas extraction process are important measures to improve mine safety and ensure the normal production of mines. In this paper, through the analysis of the influencing factors of gas overrun and the problems of borehole extraction, final hole sealing and line connection in 3308 working face of Wangpo Coal Mine, the optimization measures are given, and the gas extraction effect of working face is judged to meet the requirements. At the same time, the data of gas volume fraction and pure gas extraction volume of 10 boreholes before and after optimization of extraction process are compared and analyzed, which shows that the gas extraction effect has been significantly improved after the optimization and improvement of the process. This study can provide reference for the optimization of gas extraction process in bedding boreholes, lay a foundation for ensuring the safe production of high gas mines, improving economic and environmental benefits, and promoting the development of green mining technology in coal mines.
