CO_2地中貯留における断層の安定性に関する研究

概要

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Sequestration of carbon dioxide (CO_2) in deep aquifers has been recognized as one of the variable and perfectly feasible options for the long-term storage of captured carbon. However, the injection of CO_2 may considerably modify the initial stress state in the subsurface and result in the deformation and even failure along the previously soft band, especially faults, in the strata. The present paper discusses the variation of the stress and deformation on faults around the storage site with various kinds of parameters, such as different positions, different dip angles and different strength values of faults etc., after the CO_2 injection is finished. These preliminary simulation results are conducted to investigate and develop site selection criteria and operational constraints for CO_2 disposal formations especially near fault zones of seismic concerns.
一般社団法人日本建築学会の論文
2004-03-20