Abstract: In view of the problem of high gas content per ton of coal in Wangfeng Coal Mine,it needs to implement ground surface well drilling and extraction before mining to reduce the gas content in the coal mine.Combined with the gas volume and concentration of ground surface well drilling and extraction in the coal mine,an analysis is conducted on the safe and efficient utilization of high concentration gas extracted.A technique route using internal combustion engine generator sets for on-site power generation is proposed,and detailed introductions are made on the type selection of generator sets,technique systems,electrical systems,control systems,general layout,overhead lines and others,achieving zero emission of high concentration gas of ground surface well drilling and extraction.