Evolution of gas permeability and porosity of sandstone under stress loading and unloading conditions
Meng Wang,
Xiyi Gao,
Jiwei Xu
et al.
Abstract:In-depth study of the permeability of rock mass in high-pressure gas environment is of great significance for the site selection and construction of compressed air energy storage underground storage. The purpose of this study is to investigate the effects of multiple stress loading and unloading on the gas permeability and porosity of sandstone. The steady-state flow and porosity under stress loading and unloading conditions were measured. Based on the confining pressure sensitivity coefficient and permeabilit… Show more
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