Abstract
ABSTRACTIn this manuscript, we investigated the strength, deformation, and permeability of crystalline sandstone during load and unload process, and come to some conclusions as follows: the ultimate strength, axial strain and residual stress gradually increase with the increase of confining pressure. The linear Mogi-Coulomb strength criterion has a good regression effect, the Mogi-Coulomb stress circle and envelope is drawn, and the sample failure form is simple, all of which are a single shear failure. The Poisson’s ratio and deformation modulus were used to analyze the deformation characteristics of samples during loading and unloading. The permeability of the sample has a corresponding relationship with the damage deformation evolution, the permeability is almost zero before the axial stress reaches the yield strength, the permeability increases slowly when the rock specimen reaches the yield stage late, the permeability increases sharply after the rock sample was destroyed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.