公开(公告)号：US20250003337A1

公开(公告)日：2025-01-02

申请号：US18885086

申请日：2024-09-13

Applicant: Taiyuan University of Technology

Inventor： Guorui FENG ,  Zhu LI ,  Jianyu FAN ,  Jingyu ZHANG ,  Chengen QI ,  Guilin WU

IPC: E21F1/18 ,  E21D23/04 ,  E21F1/10

Abstract: A ventilation method for a high gas working face based on alternating intake and air return in a mine gallery is provided. In this method, an isolated island working face is divided into several sections along a strike direction. A coal pillar is alternately set as a conventional section and a gas-drainage section. Opposite coal pillars in the two mine galleries within the same section are respectively used as the conventional section and the gas-drainage section. Two mine galleries on both sides of the isolated island working face are alternately used as an intake gallery and a return gallery. The coal pillar at the side of the mine gallery as the return gallery is the gas-drainage section. A gas-drainage hole communicating a goaf is provided in the gas-drainage section, so that gas in the goafs at two sides of the isolated island working face can be extracted alternately.