Discussion on Water Disaster Control Technology of Directional Storage of Carbon Dioxide in Aquifer Space
To effectively prevent and control the occurrence of mine water disaster accidents,the storage and utilization status of CO2 was studied from three aspects of CO2 storage location,storage conditions and storage methods.A technology of directional storage of carbon dioxide in aquifer space to control water disaster was proposed,that is,when the deep aquifer is reinforced by grouting in the mine,the supercritical CO2 is injected with the slurry to realize the directional storage of CO2 and the control of water disaster simultaneously.The results show that supercritical CO2 can not only accelerate the flow of slurry in the grouting pipe and avoid the blockage of slurry viscosity,but also react with Ca2+and Mg2+ions in mine water and rock strata to generate CaCO3,MgCO3 and other consolidations,which can effectively block the water conduction channels such as cracks and pores in the aquifer,and realize the coupling treatment of mine water disaster and CO2 mineralization and storage.In view of the current research status,this paper makes an in-depth analysis of the five aspects of the injection method,gas-water two-phase interface tracking,storage and reinforcement mechanism,supercritical CO2 slurry performance and storage effect evaluation in the process of water disaster treatment,which provides scientific reference and prevention thinking for the integrated treatment of carbon storage and water disaster.
"Dual carbon"targetAquiferDirectional groutingCO2 storageMine water inrush
万方数据
维普
