公开(公告)号：US20210404337A1

公开(公告)日：2021-12-30

申请号：US16616603

申请日：2018-11-02

Applicant: China University of Mining and Technology

Inventor： Nong ZHANG ,  Zhengzheng XIE ,  Junyao ZHOU ,  Yanpei AN

IPC: E21C41/18 ,  E21F15/00 ,  E21F1/04 ,  E21F13/06

Abstract: A synergistic mining method for underground mining, separation and filling for a close distance coal seam group is applicable to the mining engineering field. Full-mechanized caving mining is carried out for a close distance coal seam group, an underground coal gangue separation system and a filling face are designed according to the yield of gangue in the production process; the gangue produced in the mining process is transported centrally into an underground coal gangue separation chamber, and the separated gangue is transported to the filling face for filling and mining; the gangue produced at the filling face is transported back to the filling face for backfilling after underground washing separation. The method separates nearby and filling at selected locations, reduces the damage and disturbance to the underground rock mass that may be caused by a conventional mining method, and solves problems in treatment of strong dynamic pressure in advance.