State Key Laboratory of Geomechanics and Geotechnical Engineering

Geochemical responses of mineral powder materials and natural rock cores to H2-water exposure in underground hydrogen storage

Geochemical interactions among H 2 , water, and subsurface minerals may affect the integrity of underground hydrogen storage (UHS). Five mineral-enriched powders and one cement material were exposed to H 2 gas, He-water, and H 2 -water for 30 days at 120 °C and 10 MPa. Sandstone,...

AN Improved Smoothed Particle Hydrodynamics Method Applied to Crack Propagation and Deformation of Circular Deep Tunnels in Layered Rock

ABSTRACT To investigate the processes of crack propagation and deformation failure of surrounding rock induced by deep tunnel excavation in layered rock masses, the conventional smoothed particle hydrodynamics (SPH) method is improved. A novel numerical simulation approach, terme...

Intelligent prediction under rockburst class imbalance: A coupled model fusing KMeans-SMOTE and CatBoost

Solving the problem of data class balance is the key premise to ensure the performance of rockburst intelligent prediction model. This paper adopted an oversampling method (KMeans‑SMOTE) based on K‑means clustering and Synthetic Minority Oversampling Technique (SMOTE). Firstly, t...