A5101997989- Rock Mechanics and Modeling
- High-Velocity Impact and Material Behavior
- Structural Response to Dynamic Loads
- Geomechanics and Mining Engineering
- Landslides and related hazards
- Geophysical Methods and Applications
- Mineral Processing and Grinding
- Fatigue and fracture mechanics
- Geoscience and Mining Technology
- Ultrasonics and Acoustic Wave Propagation
- Tailings Management and Properties
- Geotechnical and Geomechanical Engineering
- Tunneling and Rock Mechanics
- Fluid Dynamics Simulations and Interactions
- Geotechnical Engineering and Underground Structures
- Numerical methods in engineering
- Metal Forming Simulation Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Granular flow and fluidized beds
- Energetic Materials and Combustion
- Transportation Safety and Impact Analysis
- Grouting, Rheology, and Soil Mechanics
- Earthquake Detection and Analysis
- Geotechnical Engineering and Analysis
- Mining and Gasification Technologies
University of Science and Technology Beijing
2019-2025
China University of Mining and Technology
2012-2024
Space Engineering University
2020-2023
State Key Laboratory for Geomechanics and Deep Underground Engineering
2016-2021
Aiming at soft rock ground support issues under conditions of high stress and long-term water immersion, the failure mechanism is revealed by taking deep-water sumps Jiulong Mine as engineering background employing field investigation, tests structure, mechanical properties mineral composition. The main factors leading to surrounding include complex state sumps, high-clay content water-weakened rock, unreasonable design. In this paper, broken fractured mass near roadway opening considered...
Abstract There is great variation in the lithology and lamination thickness of composite roof coal-measure strata; thus, prone to delamination falling, it difficult control surrounding rock when developing roadway such strata. In deep mining, stress environment complex, mechanical response mass different from that shallow mass. For composite-roof excavated mass, key safe efficient production mine ensuring stability roadway. The present paper obtains typical failure characteristics...
Considering the energy consumption of crushed zone caused by blasting, dissipation characteristics were investigated through theoretical calculation and a plug-in for reduction was made. As result, an improved CDEM method suitable studying blast-induced crack propagation proposed. The then used to numerically simulate under three different in-situ stress conditions: uniaxial stress, biaxial equal stresses unequal stresses. It found that conditions had significant effects on distribution...
Abstract Drilling and blasting methods have been used as a common driving technique for shallow-hole in rock roadways. With the advent of digital electronic detonators need increased production efficiency, traditional design is no longer suitable deep hole blasting. In this paper, disperse charge cut method was proposed to address issues low excavation depth high block rate undercut First, model illustrate mechanism dispersive process. Then, continuous dispersed models were developed using...
AbstractIn order to study the influence of open joint on blasting damage and crack propagation, plexiglass (PMMA) specimens with joints were designed carry out a using digital laser dynamic caustic experimental system. The results showed that could not pass through opening joint. promote destruction medium between borehole Affected by reflected stress wave at joint, was no longer simply subjected tensile stress. Instead, it influenced combined action shear fracture type changed from Type I...
Cutting is a key factor affecting the speed of blasting excavation. With continuous advancement deep-hole technology, determining optimal extra-depth cut relative to non-cut blast hole paramount importance. By combining model experiments and numerical simulations, this study systematically investigates effect on post-blast damage morphology, width, depth, area, fractal damage. Furthermore, simulations were employed validate experimental results from perspectives evolution peak pressure at...
The problem of roadway support in swelling soft rock was one the challenging problems during mining. For most geological conditions, combinations two or more supporting approaches could meet requirements roadways; however, extremely rock, combined even not control large deformations. purpose this work to probe deformation mechanisms rock. Based on main return air-way a coal mine, monitoring and geomechanical analysis were conducted, as well plastic zone mechanical model analysed. Results...