公开(公告)号：US20240360761A1

公开(公告)日：2024-10-31

申请号：US18364727

申请日：2023-08-03

Applicant: Taiyuan University of Technology

Inventor： Jinwen BAI ,  Junbiao MA ,  Yanna HAN ,  Ruikai PAN ,  Xudong SHI ,  Gowei WU ,  Jun GUO ,  Jian LI ,  Fei CHANG

IPC: E21F17/16 ,  C04B14/06 ,  C04B18/04 ,  C04B22/06 ,  C04B22/14 ,  C04B40/02

CPC classification number: E21F17/16 ,  C04B14/06 ,  C04B18/0418 ,  C04B22/064 ,  C04B22/143 ,  C04B40/0231 ,  C04B2111/00017 ,  C04B2111/00724

Abstract: Disclosed is a combined process of integrating stoping-backfilling and carbon storage. The combined process includes the following steps of: determining a cyclic interval of a working face through measured data of a mine pressure of a fully-mechanized coal winning working face; when the stoping distance of the fully-mechanized coal winning working face reaches a backfilling isolation interval, providing a backfilling tarpaulin behind a hydraulic support, and pumping, through a backfilling pipeline, backfilling slurry to a backfilling area along a support beam; when the area is backfilled with the backfilling slurry, injecting supercritical carbon dioxide into the backfilling slurry; and allowing the supercritical carbon dioxide to fully react with the backfilling slurry to solidify the backfilling slurry.

公开(公告)号：US20240301782A1

公开(公告)日：2024-09-12

申请号：US18364720

申请日：2023-08-03

Applicant: Taiyuan University of Technology

Inventor： Guorui FENG ,  Jian LI ,  Jinwen BAI ,  Jun GUO ,  Junbiao MA ,  Xudong SHI

IPC: E21B43/295 ,  E21F15/00

CPC classification number: E21B43/295 ,  E21F15/00

Abstract: Disclosed is a method for remining a residual coal pillar in a residual mining area by collaboration of pillar-side backfilling and in-situ gasification. The method includes the following steps of: ascertaining geological and hydrological conditions, a geometric shape and a reserve of a residual coal pillar; determining the feasibility of underground gasification mining for the residual coal pillar; carrying out side supporting on the residual coal pillar in a goaf by using a pillar-side backfilling method; and carrying out the underground gasification mining on the residual coal pillar by means of an underground coal gasification process.