Study on the influence of joint roughness on time-dependent shear properties
Available online 3 January 2026
Experimental evidence confirms that initial damage significantly influences rock creep behavior; however, existing creep models rarely account for instantaneous shear damage induced during shear loading....
Machine Learning-Based Prediction of Fracture Toughness of ISRM-Recommended CCNBD Rock Specimens Using ANN and Metaheuristic Optimizations
Available online 31 December 2025
Accurate determination of rock Type-I fracture toughness (KIC) is crucial in geomechanics applications involving brittle or quasi-brittle rock fracturing. However, direct laboratory determination of...
Experimental study on nonlinear seepage characteristics of porous–fracture composite sandstone
Available online 31 December 2025
Accurate characterization of non-Darcy flow in pore-fractured rock mass is essential for geothermal mining, hydraulic fracturing, and tunnel engineering. Currently, most studies focus on the characteristics...
A Unified Constitutive Model for the Static Tensile Behavior of Constant-Resistance Anchor Bolts in Deep Underground Roadways
Available online 29 December 2025
Constant-resistance and large-deformation (CRLD) anchor bolts have evolved into two generations comprising six structural models (1G and 2G CRLD), and have been widely used in underground engineering...
Role of Pre-existing Microcracks and Spatial Characteristics in Controlling Rock Fracture under Indentation: A Grain-Based DEM Study
Available online 27 December 2025
Achieving efficient and controlled rock fracture remains a core challenge in deep energy development, critical mineral extraction, and next-generation underground infrastructure. In brittle rocks, macroscopic...
Mechanical Performance and Environmental Benefits of Ternary Blends of Phosphogypsum, Calcium Carbide Residue, and Rock Demolition Waste for Use in Road Subgrade
Available online 27 December 2025
Global collection of rock demolition waste (DW) is a significant environmental concern due to their high volumes, limited disposal options, and risk of contaminant leaching. An integrated approach of...
Water-Sealing Performance of Underground Oil Storages Considering the Capillary Effect
Available online 27 December 2025
Water-sealing effect of underground oil storages is primarily achieved by groundwater filling the fractures. This study proposes a set of water-sealing criteria applicable to both single cavern and...
An energy-based simulation method for stratum damage characterization in underground coal mining
Available online 23 December 2025
This paper presents an energy dissipation-based simulation method for quantitatively analyzing stratum damage in underground coal mining, essential for safe operations and panel parameterization. Grounded...
Nonlinear Mechanical Analytical Model and Stochastic Analysis Method for Tunnel Longitudinal Performance Subjected to Fault Movement
Available online 19 December 2025
Clarifying the mechanisms by which soil variability influence the longitudinal response of tunnels is critical for accurately assessing the performance of tunnels traversing fault zones. However, the...
Large-scale mine experiments on hydraulic fracture propagation mechanism in fault-controlled reservoirs
Available online 19 December 2025
This study utilizes pioneering large-scale true triaxial experiments to investigate the hydraulic fracture propagation mechanisms in deep fault-controlled carbonate reservoirs. Synthetic specimens (2.0...
Experimental Study on Hydro-Mechanical Behavior and Damage Evolution in Tunnel Surroundings with Different Lithologies
Available online 18 December 2025
Understanding the mechanical properties of surrounding rocks is essential for the safe construction of tunnels. This study investigates dolomite and sandstone from the Yuxi section of the Central Yunnan...
Engineering Challenges of Deep-buried Tunneling in the Alps and Himalayas
Available online 18 December 2025
The Himalayas and Alps, both shaped by Tethys Suture Zone evolution, manifest fundamentally different mechanical features throughout their geological development. Over the past century, the Alps have...
Experimental study on the dynamic evolution process of acoustic emission precursor information chain in the entire process of hard-rock failure
Available online 16 December 2025
A comprehensive understanding of rock failure precursors is essential for developing accurate early warning systems. A key research objective involves characterizing multi-stage rock failure precursors...
Developing Site-Specific Preconditioning Blast Designs for Ultra-Deep Shaft Sinking: A Case Study from the Onaping Depth Project
Available online 15 December 2025
This paper presents numerical modeling simulations that replicate the highly successful preconditioning blasting campaign used during the ultra-deep Onaping Depth shaft construction. The model was calibrated...
Study on Creep Characteristics and Constitutive Model of Damaged Shale: Based on the Impact of In-situ Methane Explosion
Available online 15 December 2025
Methane In-Situ Explosion Fracturing (MISEF) is an innovative technique for enhancing production in unconventional oil and gas reservoirs. It operates by precisely detonating pre-desorbed methane gas...
Experimental study on progressive failure process and crack evolution of confined red sandstone under impact loading
Available online 15 December 2025
Rock failure is a progressive process, initiating at the micro-scale and gradually evolving into macroscopic damage over time. While advances have been made in understanding the progressive failure...
Intelligent prediction of shear characteristics of rock joints
Available online 13 December 2025
Predicting the shear behaviour of rock joints is of primary importance in the stability analysis of rock-engineering structures. However, constitutive models of the shear characteristics of rock joints...
Mechanical behavior of tunnel excavation at great depth in coarse-grained soil-rock backfills: insights from FDM-DEM simulations
Available online 11 December 2025
Tunneling through deep backfills composed of coarse-grained soil-rock mixture (SRM) poses critical engineering challenges due to their loose structure, high porosity, and large block inclusions. These...
Computational Intelligence for Blast-Induced Backbreak Prediction in High-Stress Mining Environments
Available online 11 December 2025
Ensuring the stability of mine walls and floors is essential for maintaining pit safety and maximizing productivity. One of the key challenges in surface mining is predicting blast-induced backbreak,...
Mechanisms Influencing Timber Support Integrity for Rock Collapse Mitigation in Artisanal and Small-Scale Mining
Available online 11 December 2025
Catastrophic rock collapses pose a significant threat to the safety and sustainability of Artisanal and Small-scale Mining (ASM), endangering workers and the supply of critical minerals vital for technological...
Shear cracking process and micromechanism of intermittent joint: Insights from true triaxial shear test and PFC3D-GBM simulation
Available online 29 November 2025
Previous direct shear tests and simulations of structural planes primarily addressed slopes and shallow underground engineering. However, in deep engineering, the structural planes of the surrounding...
Simultaneous Propagation of Multiple Hydraulic Fractures in Crystalline Rock: A Numerical Investigation Based on Coupled Fluid-Solid Discrete Element Framework
Available online 20 November 2025
The simultaneous multiple hydraulic fracturing treatment has been extensively employed in Enhanced geothermal systems (EGS) to increase the complexity and area of artificial fractures. However, the...
HYBRID XGBOOST - 3D FEA APPROACH FOR PREDICITNG BEARING CAPACITY OF RECTANGULAR FOUNDATIONS ON ROCK SLOPES
Available online 14 November 2025
This study investigates the bearing capacity of a sloping rock foundation beneath rectangular and, in particular, square footings. Additionally, the study proposes a novel hybrid machine learning approach,...
Effect of anisotropic tunnel large-deformation control based on a prestressed constant-resistance cable: Insights from 2D-Finite-discrete element and Finite element method simulation
Available online 8 November 2025
Prestressed constant-resistance large-deformation anchor cable has been proved to be an effective technology to control the large-deformation disaster of deep soft rock tunnel. However, there are few...
Cemented soil-soil interface shear strength evaluation Ⅱ: Roughness impact and quantitatively practical model based on RQD
Available online 5 November 2025
The shear characteristics of cemented soil-soil interface with varying roughness, resulting from different construction techniques, significantly affect the stability and safety of related engineering...