A5090384437- Rock Mechanics and Modeling
- Coal Properties and Utilization
- Geoscience and Mining Technology
- Fluid Dynamics and Mixing
- Hydraulic Fracturing and Reservoir Analysis
- Erosion and Abrasive Machining
- Fluid Dynamics and Heat Transfer
- Heat Transfer and Boiling Studies
- Geotechnical Engineering and Underground Structures
- Reservoir Engineering and Simulation Methods
- Geomechanics and Mining Engineering
- Nuclear Engineering Thermal-Hydraulics
- Tunneling and Rock Mechanics
- Geotechnical Engineering and Analysis
- Particle Dynamics in Fluid Flows
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics Simulations and Interactions
- Remote Sensing and Land Use
- Enhanced Oil Recovery Techniques
- Gas Dynamics and Kinetic Theory
- Grouting, Rheology, and Soil Mechanics
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Mineral Processing and Grinding
- Geotechnical and Geomechanical Engineering
Hunan University of Science and Technology
2018-2024
Oil and Gas Center
2024
Research Institute of Petroleum Exploration and Development
2020-2023
Kunming University of Science and Technology
2021
China Aerodynamics Research and Development Center
2019
Chongqing University
2014-2018
Hunan Vocational College of Safety Technology
2018
Xiangtan University
2018
China Three Gorges University
2018
China Land Surveying and Planning Institute
2014
The analytic solution for surrounding rock of roadway is significance stability analysis and support. However, analytical which took influences water seepage, strain softening, dilatancy intermediate principal stress all into account did not receive much reporting. To promote research in this aspect, a mechanical model simultaneously considering dilatancy, was established based on porous elastoplastic mechanics, then unified obtained. Based an example, residual cohesion were thoroughly...
The characteristics of coalbed methane flow are jointly determined by the fracture and stress environment. Previous studies conducted under conventional triaxial or uniaxial conditions cannot truly reflect in situ environment neglected influence intermediate principal on nonlinear seepage coal. For this study, coal tests were performed true stress, allowing to be analyzed different stresses. This enables applicability characterization equations change laws relevant parameters clarified....
Fracture networks are of significance in the production coalbed methane from unconventional reservoirs. However, complex distribution and geometry fracture make effective predictions their permeability difficult. This study obtains shape a natural network coal based on stereomicroscopy experiment analyzes structural characteristics using graph theory. The fractal scaling law for branch length fractures relationships among dimensions distribution, area, porosity, connectivity, ratio maximum...
A large amount of energy is consumed in a coal and gas outburst since mass pulverized ejected, accompanying great quantity emitted, resulting major mining hazard underground around the world. Understanding how potential stored gassy seams dissipates process outbursting may possibly be key to clarify mechanisms responsible for outburst. The present study was aimed evaluate crushing various size fractions outbursts through theoretical experimental investigation into shape fine particles their...
The impinging pressure of a water jet is key factor in engineering applications, and the shape has great influence on this pressure. In paper, five different nozzle shapes were designed, impacting tests conducted based self-designed experimental platform using PVDF piezoelectric film sensor high-speed camera to record data. Additionally, computational fluid dynamics (CFD) method was also applied study velocity distribution. results show that profiles onto solid surface present consistent...
This paper focuses on the damage of shale rock impacted by a high-pressure supercritical carbon dioxide (SC-CO2) jet. A well-designed apparatus was used to conduct experiments with SC-CO2 jet impacting core plugs. The damage, including macrofailure and microchanges samples, analyzed. results show that cores develop grid-like fractures top surface, while many layered were observed inside means computed tomography scan. maximum broken depth plugs is dependent upon combined actions pressure,...
Triaxial unloading creep tests of layered rock specimen Jinping II hydropower station were carried out using the testing machine; thus deformation curves under different confining pressures acquired. The test results showed that, in addition to obvious characteristics specimen, nonlinear accelerating emerged last stage stress condition, and whole presented typical three stages. On other hand, Burgers model constitutive equations three-dimensional state also deduced. Based on data, through...
This paper focuses on the lateral jetting commencing points associated with peak pressure when an arc-curved jet impacts flat, concave, convex, and inclined solid surfaces, respectively. A theoretical method based a shock wave background is used to establish models for these situations, which indicate that critical radius initiation of dependent combined actions velocity, surface shape, angle. Arbitrary Lagrangian–Eulerian (ALE) formulations are then model process jets impacting varied...
Fracture and stress environments significantly affect the flow of coalbed methane. Under stress, fracture deformation damage occur, which change original characteristics lead to changes in gas characteristics. The pressure gradient makes fluid obviously nonlinear. Using linear theory describe leads a large error predicting methane productivity. In this study, seepage tests on fractured coal are carried out under different stresses gradients, nonlinear related parameters analyzed,...
Abstract Experiments were conducted to investigate the inner structure of gas–liquid flow in airlift pumps by a laser Doppler velocimetry (LDV) system and laser‐high speed photography. The measured central plane riser pipe was illustrated device, corresponding this recorded high camera. results showed it wispy annular flow, rather than dominated pump performance under gas rate. This had thick film with maximal value 0.2 times diameter, kept working output liquid rate at large rates....