公开(公告)号：US20240035382A1

公开(公告)日：2024-02-01

申请号：US18277925

申请日：2021-06-30

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yang JU ,  Peng LIU ,  Yu FEI ,  Xiaodong NIE ,  Yan ZHU

IPC: E21C37/18 ,  E21B41/00 ,  E21B43/28 ,  E21F15/00

CPC classification number: E21C37/18 ,  E21B41/0064 ,  E21B43/28 ,  E21F15/005

Abstract: A fluidized coal mining method for implementing CO2 underground storage, includes mining area division, tunneling mining, filling and supporting, roof and bottom plate sealing, and boundary surrounding rock sealing. A goaf formed by a mining device after tunneling and mining along a mining strip is filled and supported, and filling and supporting can form a high-strength supporting wall body, which not only provides an effective supporting effect for roof and bottom plate rocks, but also forms a filled and supported wall body; a space for underground storage of CO2 is formed between adjacent filled and supported wall bodies; at the same time, the mining device further seals the roof and a bottom plate of the goaf, and seals boundary surrounding rocks of a mine field, so that the entire mine field forms a whole closed space for the underground storage of CO2 after mining is completed.