A5019190185- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Grouting, Rheology, and Soil Mechanics
- Arsenic contamination and mitigation
- Underground infrastructure and sustainability
- Mine drainage and remediation techniques
- Bauxite Residue and Utilization
- Coal and Its By-products
- Coal Properties and Utilization
- Combustion and flame dynamics
- Gas Dynamics and Kinetic Theory
- Geotechnical Engineering and Analysis
- Geoscience and Mining Technology
- Computational Fluid Dynamics and Aerodynamics
- Geotechnical Engineering and Underground Structures
- Radiative Heat Transfer Studies
- Iron oxide chemistry and applications
- Fluid Dynamics and Turbulent Flows
- Aerodynamics and Fluid Dynamics Research
China University of Mining and Technology
2012-2022
State Key Laboratory for Geomechanics and Deep Underground Engineering
2020
China Railway Construction Corporation (China)
2014
In this study, the roof-cutting-type gob-side entry retaining is introduced, and its application in medium-thickness coal seams studied. Based on analysis of construction procedure principle, mechanical model retained roadway structure cantilever beam formed by roof cutting was established, support resistance deformation were obtained. addition, through technological design numerical simulation, parameters determined. The roof-cutting height angle designed to be 9 m 15°, respectively. Flac3...
Abstract Not only is the thermal environment of coal mining face related to temperature surrounding rock, it also closely associated with ventilation model working face. In this study, numerical methods were applied study impact two major systems on airflow in coalmine. Firstly, a heat transfer rock and was established reveal that wall roughness could enhance between airflow. Moreover, an analysis conducted under different modes first According analytical results, U-type system lower than...
Abstract Ferrihydrite is effective in arsenic removal because of the considerable amount active hydroxyl groups. Solid–liquid separation adsorbed ferrihydrite from aqueous solution important for treatment technology. Coagulation a promising process separation. Effects different coagulants on settlement were investigated. Surface charge significantly decreased after was ferrihydrite. Turbidity, iron and efficiencies used to characterize settling process. Turbidity efficiency with polyferric...
The complicated flow conditions inner or outer of the high speed vehicle would make shock wave boundary layer (SWBLI) much different from its standard state on an adiabatic wall. heating and cooling effects SWBLI achieved by changing wall temperature, are evaluated numerical simulations. It is found that temperatures have significant influence patterns SWBLI. scale induced separation increases obviously with rise shrink dramatically decrease temperature. This could be partially explained...
To solve the problem of instability and failure a roadway in Dianping coal mine working face under condition traditional gob-side entry retaining, mechanical model was established for analysis. The reasons damage are as follows: (1) mining height is high, hard thick old roof exhibits large space rotation subsidence; (2) retained includes section; (3) impact strong, adaptability cable poor. Therefore, technologies “roof-cutting type retaining” were proposed principle analyzed. Numerical...
Gob‐side entry retaining (GSER) is a popular no‐pillar mining technology that can increase coal recovery rate. We propose the application of high‐strength lightweight (HSLW) concrete to construct gob‐side support body (GSSB) in NO. 411 inclined working face Jingang Coal Mine. Firstly, mechanical model retained roadway was established, and calculation for limit angle GSSB stability resistance mathematically derived. Using performance test, optimal proportion LC50 determined as follows:...
A new-type burner is presented which used transverse airflow to control the air-jet angle from instead of traditionally swing mechanical components installation burner. Jamming problems traditional burners can be avoided. The structure and working principle airflow-controlled are also introduced. Numerical simulation by means a ¿-¿ turbulence model carried out. validated semi-empirical formula other air-jet. effect jet position momentum ratio controlling main on deflective discussed. results...