Thermally induced cracking and the evolution of mechanical anisotropy in bedded sandstone under high-temperature conditions: a microscale perspective

Degradation Behavior and Damage Evolution Model of Sandstone under Coupled Stress-Temperature-Chemical Action

Seepage from water-rich strata and persistent roof water inflow during coal mining can substantially weaken the mechanical properties of coal and rock masses. Elevated in situ stress and geothermal temperature in deep roadways further accelerate deterioration and increase the risk of engineering instability. In this st...

Mechanical Responses and Multiscale Thermal-Damage Evolution of Sandstones Subjected to Elevated Temperatures: Implications for High-Temperature Rock Engineering

High-temperature-induced thermal damage in rocks critically affects the long-term stability of surrounding rock masses. Understanding the mechanical responses and damage evolution mechanisms of rocks under elevated temperatures is essential for safety assessment and risk mitigation in deep high-temperature rock enginee...

Effects of crack inclination and aperture on mechanical properties and fracture behavior of sandstone: an experimental study based on acoustic emission monitoring

: The inclination and aperture of rock fractures significantly influence the mechanical properties and crack propagation behavior of rock masses. To investigate the deformation characteristics and crack evolution in sandstone, uniaxial compression tests were conducted on specimens containing pre-existing cracks with di...

Multiscale Experimental Characterization and FDEM Integration of Deformation and Failure of Deep Mudstone Under High Temperature and High Pressure

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...

Progressive Damage of Sandstone and Shale Under Heating and Cooling Cycles: Implications for Stratified Rock Slope Stability

Experimental investigation on damage and seepage characteristics of layered slate under cyclic loading and unloading of stress

To investigate the damage deterioration and seepage evolution of bedded slate under cyclic axial loading–unloading, triaxial tests were conducted on specimens with bedding angles of 0°, 30°, 45°, 60° and 90° under 10 MPa confining pressure and 5 MPa pore pressure. The study systematically analyzed the influence of bedd...