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1.发明公开公开(公告)号：US20240360762A1
公开(公告)日：2024-10-31
申请号：US18364733
申请日：2023-08-03
Applicant: Taiyuan University of Technology
Inventor： Guorui FENG , Junbiao MA , Jinwen BAI , Ruikai PAN , Yanna HAN , Xudong SHI , Jiachen MI , Guowei WU , Jun GUO , Fei CHANG
CPC classification number: E21F17/16 , C04B14/06 , C04B18/0418 , C04B22/064 , C04B22/143 , C04B40/0231 , E21D11/10 , C04B2111/00017
Abstract: Disclosed is a method for backfilling and reconstructing a carbon storage space in an abandoned main roadway and storing CO2. A surrounding rock of the main roadway is surveyed through geophysical exploration technology, and an anchor bolts (anchor cables) are used to reinforce and support an area which has unstable confining pressure bearing. According to a width and a height of the roadway section of the main roadway, a support formwork is forged in advance, and after the support formwork is placed in the main roadway, backfilling slurry is injected to the periphery of the support formwork. Meanwhile, supercritical carbon dioxide is injected into the backfilling slurry and the roadway, respectively.
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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.
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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
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.
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