A5101619649- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Landslides and related hazards
- Geotechnical Engineering and Analysis
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Numerical methods in engineering
- Grouting, Rheology, and Soil Mechanics
- Copper Interconnects and Reliability
- Fluid Dynamics Simulations and Interactions
- Electronic Packaging and Soldering Technologies
- Ultrasonics and Acoustic Wave Propagation
- Geoscience and Mining Technology
- Geotechnical and Geomechanical Engineering
- Composite Material Mechanics
- Educational Technology and Assessment
- Advanced Decision-Making Techniques
- Higher Education and Teaching Methods
- Optical measurement and interference techniques
- Metallurgy and Material Science
- Titanium Alloys Microstructure and Properties
- Wireless Sensor Networks and IoT
- Wireless Power Transfer Systems
- Mechanical Behavior of Composites
- Digital Media and Visual Art
Liaoning Technical University
2024
Tsinghua University
2023-2024
Shandong University of Science and Technology
2018-2024
Nanchang Hangkong University
2020-2021
Xianyang Normal University
2007-2012
Northwestern Polytechnical University
2010
Intel (United States)
1995-2006
Abstract Multi-seam mining often leads to the retention of a significant number coal pillars for purposes such as protection, safety, or water isolation. However, stress concentration beneath these residual can significantly impact their strength and stability when below them, potentially leading hydraulic support failure, surface subsidence, rock bursting. To address this issue, linkage between failure instability strata during multi-seam is examined in study. Key controls include pillar...
Abstract In this paper, a hydro-thermo-mechanical coupling model based on the smoothed particle hydrodynamics with total Lagrangian formula (HTM-TLF-SPH) is proposed to simulate crack propagation and instability process of fractured rock mass. TLF-SPH uses kernel approximation, that is, function its gradient need only be calculated once in initial configuration, which much more efficient than (SPH) Euler approximation. TLF-SPH, particles interact each other through virtual link, path mass...
The friction factor is one of the key parameters for evaluating fluid flow characteristics and pressure head loss in fractures, accurate prediction crucial a deeper understanding fracture processes. Traditional studies often consider roughness effects only inertial factor, overlooking its impact on viscous factor. To address this limitation, study introduces equivalent permeability non-Darcy coefficient rough fractures fits Forchheimer equation using 78 experimental data points, proposing...
To solve the problem of large deformations and failure rocks surrounding a dense area at footwall normal fault, we considered F22 fault in fourth mining Dashucun coal mine Hebei Province as research object conducted onsite investigations hidden dangers, such roof caving wall over roadway. The deformation law was obtained using FLAC3D numerical simulation method, factors influencing were analyzed. Consequently, advanced support working face scheme for roadway optimized. After implementing...
Mine disasters, such as large deformation, floor heave, and roof fall, occur extremely easily in weakly consolidated soft rock strata western China, posing enormous challenges to traditional anchorage support design. To avoid tensile failure of bolts a result the superposition effect stress accumulation, segmentally yieldable support, taking into consideration different zones surrounding rock, is presented this paper. First, load transfer mechanisms process are analyzed for end anchorage,...
Abstract The mining of coal mines in western China needs to focus on protecting groundwater. A non-hydrophilic similar material for simulating the development and hydraulic conductivity weakly cemented overlying strata fractures was developed. Fine sand, coarse gypsum are used as aggregates. Paraffin Vaseline binders. ratios sandy mudstone medium-grained sandstone were determined by orthogonal experiments, simulation tests. results show that non-hydrophilicity rock-like materials can be...
Comprehensive research methods such as literature research, theoretical analysis, numerical simulation and field monitoring were used to analyze the disasters characteristics caused by linkage failure instability of residual coal pillars-rock strata in multi-seam mining. The effective area design method pillar-rock mining determined. evaluation index risk assessment disaster was established project case applied verified. results show that: ①The pillar will not only cause single-seam mining,...
The diffusivity of moisture along the TiN/SiO2 interface has been determined by imaging inward diffusion O18 and D2 from isotopically labeled water using a secondary ion mass spectroscopy (SIMS) technique. diffusivity, at room temperature, species are indistinguishable have value 6.0±2.0×10−13 cm2/s, four orders magnitude faster than bulk same in plasma-enhanced chemical vapor deposition silica, also SIMS. From 8 to 90 °C, activation energies for diffusivities 2D found be 0.21 0.74 eV, respectively.