Role of drainage conditions in deformation and fracture of porous rocks under triaxial compression in the laboratory

[1] In order to investigate the role of drainage conditions in deformation and fracture behaviors of porous rocks, the authors carried out a series of rock fracture tests under triaxial compression in the laboratory. The detailed space-time distribution of acoustic emission due to microcracking was used to examine pre-failure damage and failure behavior in Berea sandstone, which has a porosity of ∼20% and a permeability of ∼100 mD. The pore...