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

IPC: E21F17/16 ,  C04B14/06 ,  C04B18/04 ,  C04B22/06 ,  C04B22/14 ,  C04B40/02 ,  E21D11/10

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.

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.

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：US20220390340A1

公开(公告)日：2022-12-08

申请号：US17835926

申请日：2022-06-08

Applicant: Taiyuan University of Technology

Inventor： Guorui FENG ,  Kai WANG ,  Jinwen BAI ,  Jun GUO ,  Boqiang CUI ,  Xudong SHI ,  Haotian WU ,  Xinyu YANG ,  Cheng SONG

IPC: G01N3/10

Abstract: A loading system for a Hopkinson pressure bar test under water-gas-temperature multi-field coupling action includes: a sample sealed cabin which includes sealing flanges, Y-shaped and high-temperature resistant sealing rings, and a sealed cabin body; a gas pressure loading device which includes a high-pressure gas tank, a pressure regulating valve, a second barometer, a second high-pressure valve and a first three-way valve connected in sequence; a water pressure loading device which includes an electric pressure test water pump, a water pressure gauge, an accumulator and a one-way valve connected in sequence; a temperature loading device which includes thermocouple heating rods, a temperature display and a thermocouple temperature control circuit board connected in sequence; and a dynamic and static combined loading device which includes an axial pressure loading device, an impact loading device and a Hopkinson pressure bar member.

公开(公告)号：US20220282619A1

公开(公告)日：2022-09-08

申请号：US17752842

申请日：2022-05-24

Applicant: Taiyuan University of Technology

Inventor： Guorui FENG ,  Yijiang FAN ,  Pengfei WANG ,  Chenliang HAO ,  Xiaoze WEN ,  Jun GUO ,  Jinwen BAI ,  Tingye QI ,  Jianan LIU ,  Linjun ZHU ,  Changquan WU

IPC: E21D20/02 ,  E21C41/18 ,  E21D21/00

Abstract: A method for carrying out grouting between adjacent gateroads in internal-staggered split-level coal mining. A return air gateroad of a stoping face and an inlet air gateroad of a heading face are not on the same level. The return air gateroad of the stoping face is arranged along a roof of a coal seam. The inlet air gateroad of the heading face is arranged along a floor of the coal seam. There is a height difference between the return air gateroad and the inlet air gateroad in a vertical direction. During the construction process, the inlet air gateroad is excavated at a delay distance of 180-200 meters from the return air gateroad. The drilling and grouting are performed while excavating the roadway, where grouting holes are arranged in a single row. A device for implementing the method is also provided.