Taiyuan University of Technology

Junbiao Ma

Jinwen Bai

Xudong Shi

Jun Guo

Ruikai Pan

Guowei Wu

Fei Chang

Guorui Feng

Jian Li

Yanna Han

Jiachen Mi

Disclosed is a combined process of integrating stopping-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 stopping 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.

Combined process of integrating stoping-backfilling and carbon storage

Disclosed is a method for backfilling and reconstructing a carbon storage space in an abandoned main roadway and storing CO. 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.

Method for backfilling and reconstructing carbon storage space in abandoned main roadway and storing CO

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Taiyuan, China

Junbiao Ma