Hydraulic fracturing in low-permeability porous rocks involves strong interactions between rock deformation, pore fluid transport, and progressive fracture damage. In this study, a hydro-mechanical phase-field model was developed to investigate hydraulic fracture evolution in saturated porous media. Biot poroelasticity...
Hydraulic-fracture transmission across lithologic interfaces governs fracture-height growth and reservoir connectivity in shale–sandstone interbedded reservoirs, yet the coupled effects of mechanical contrast, interface properties, layer geometry, and operational parameters remain insufficiently quantified. A two-dimen...
Liquid oxygen blasting is an efficient nonexplosive rock‐breaking method in geotechnical engineering, yet its rock fragmentation behavior and cross‐section formation mechanism remain unclear. This study systematically investigates the fragmentation characteristics of rocks subjected to liquid oxygen blasting through...
The deformation and failure mechanism of deep mudstone under high temperature and high pressure (HTHP) is a critical issue constraining deep-drilling efficiency. Taking an HTHP mudstone formation in the western South China Sea as the research object, this study integrates X-ray diffraction, scanning electron microscopy...
To mitigate the violent movement of overlying strata in goaf areas, rock–concrete composite support systems are widely utilized. However, the mechanical behavior of such systems under the influence of complex pre-existing defects, such as arc-shaped fractures, remains insufficiently understood. This study aims to c...
Hydraulic fracture propagation directly affects stimulation efficiency in low-permeability unconventional reservoirs and is influenced by in situ stress, fluid injection, and bedding structure. In this study, a coupled hydro-mechanical phase-field model was developed by combining solid mechanics, porous media flow, and...
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