After the mine accident， the first thing to do is to save people. If the shaft or roadway is damaged， rescuers must clean up the shaft and roadway if they want to reach the underground accident site. If cleaning takes a long time and there is high risk， they must decisively adopt surface drilling methods to rescue people. The small diameter borehole， also known as lifeline channel， is first drilled through to the roadway to provide life supply to the trapped miners， including air， food， drugs， communications； then， the large diameter borehole， known as rescue channel， is vertically drilled from surface for rescue. Taking the No. 1 rescue hole in the Qixiashan gold mine as an example， the drilling technology for the lifeline channel is introduced.