METHOD FOR BACKFILLING AND RECONSTRUCTING CARBON STORAGE SPACE IN ABANDONED MAIN ROADWAY AND STORING CO2
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United States of America
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Issued Date -
Oct 31, 2024
app pub date -
Aug 3, 2023
filing date -
Aug 3, 2023
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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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