Abstract: The S2107 working face is the high gas working face, and the upper corner has gas overrun problem due to the U-shaped ventilation way. In order to reduce the gas concentration in the upper corner and ensure the safe and efficient recovery of the working face, the long riser pipe gas extraction technology is used at S2107 working face to solve gas overrun problem in upper corner of S2107 working face. Industrial test shows that buried long riser pipe gas extraction technology can reduce the gas concentration in upper corner of U-shaped working plane, and reduce the number of gas early warning.