Institute of Rock and Soil Mechanics

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...

Research and application of directional fracturing roof cutting for lateral thick and hard roofs in shallow-buried large-section roadways

Abstract Aimed at the severe strata behavior hazards caused by the occurrence of lateral thick and hard roofs in shallow-buried large-section roadways, a directional fracturing and roof cutting technology for lateral thick and hard roof zones in shallow-buried large-section coal...

A configurational-force-guided intra-element cracking strategy for ECZM-FDEM rock fracture simulation

Crack paths in cohesive-zone-model-based finite-discrete element method (CZM-FDEM) simulations are often constrained by pre-existing element boundaries, while intrinsic cohesive insertion may introduce artificial compliance before fracture activation. This study develops a config...

Slurry dewatering characteristics under synergistic mechanical pressure and electro-osmosis at constant current

Pressure-assisted electro-osmosis is effective for deep dewatering of high-moisture clay slurries, but the coupling effects of mechanical pressure and constant current under two-sided drainage, along with drainage redistribution and energy consumption, remain unclear. Using a sel...

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...

Three-dimensional in situ stress reconstruction in deep hard rock by integrated DCDA–DSA inversion of oriented cores

Core-based observables constrain different components of the three-dimensional (3D) in situ stress state in deep hard-rock engineering and therefore require consistent integration. A closed-form DCDA–DSA inversion was developed in which diametrical core deformation analysis (DCDA...

Deep underground energy storage solutions for data centers driven by artificial intelligence energy consumption

The rapid development of artificial intelligence (AI) has driven an unprecedented surge in electricity consumption by data centers (DCs). Although renewable energy and ground-based energy storage technologies are being widely adopted, they still face inherent limitations in scala...

Hydrogen corrosion mechanism and multi-field coupled constitutive model for wellbore cement sheath in salt cavern hydrogen storage

Salt cavern hydrogen storage is a key technology to meet the demand for large-scale hydrogen energy storage. The long-term performance evolution of the wellbore cement sheath in a simulated salt cavern hydrogen storage conditions (55°C, 20 MPa) is directly related to the safety a...

Seismic and Aseismic Slip Compete to Regulate Permeability Evolution During Fault Reactivation

Abstract Crustal permeability can be created through microearthquakes as observed at field and laboratory scales. The respective roles of seismic and aseismic slip in governing permeability evolution remain ill‐constrained. Here, we present observations of controlled pore pressur...

A tolerance-based framework for optimizing profile sampling intervals in joint infilling assessment and shear strength prediction

The accurate assessment of joint infilling is critical for reliably estimating the shear strength of rock masses. While common practice often follows the International Society for Rock Mechanics (ISRM) suggestion of using a sampling interval ( ∆L ) equal to 2% of the total sample...

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Abstract Double‐deck shield tunnels in urban areas may suffer severe cracking at beam–column joints of internal frames when subjected to surface surcharge, because lining ovalization imposes incompatible deformation demands on rigid internal connections. Motivated by field observ...

Discrimination of the weathering degree of speleothems based on hyperspectral characteristics

Abstract Accurate and non-destructive identification of the weathering degree of speleothems in tourist caves holds critical implications for establishing scientific conservation criteria. To address the limitations inherent in conventional rock weathering classification systems,...

Faulted Rock Slope Stability Under Blasting Excavation Using Copula‐Based Rotated Anisotropic Random Fields

ABSTRACT Blasting excavation can induce permanent displacement in faulted rock slopes and adversely affect slope stability. Most existing stability assessments use deterministic approaches and therefore do not adequately account for the spatial variability and cross‐correlation o...

Seismic wave attenuation in saturated porous media: A new fractal double-porosity perspective

Summary The influence of rock microstructure makes quantifying seismic wave dispersion and attenuation in saturated rock a fundamental challenge. This challenge arises from the multiscale heterogeneity of the pore distribution and the consequent fluid distribution, which gives ri...

Mechanical response of highway tunnels under fault dislocation and a combined anti-dislocation technology: a case study of the Tianshan-Shengli Tunnel

Active faults are widely distributed in China, posing a significant threat to the safe operation of tunnels. Current research on anti-dislocation technologies for tunnels has predominantly focused on either articulated designs or over-excavation individually, with limited studies...