A5100667730- Coal Properties and Utilization
- Safety and Risk Management
- Geoscience and Mining Technology
- Fire dynamics and safety research
- Rock Mechanics and Modeling
- Underground infrastructure and sustainability
- Fire Detection and Safety Systems
- Fire effects on ecosystems
- Evacuation and Crowd Dynamics
- Coal and Coke Industries Research
- Thermal and Kinetic Analysis
- Thermochemical Biomass Conversion Processes
- Muscle activation and electromyography studies
- Granular flow and fluidized beds
- Catalysts for Methane Reforming
- Neuroscience and Neural Engineering
- Higher Education Learning Practices
- Military Defense Systems Analysis
- Methane Hydrates and Related Phenomena
- Geomechanics and Mining Engineering
- Advanced Sensor and Energy Harvesting Materials
- Hydrocarbon exploration and reservoir analysis
- Geophysical Methods and Applications
- Cyclone Separators and Fluid Dynamics
- Ideological and Political Education
Northwestern Polytechnical University
2023-2025
Xi'an University of Science and Technology
2013-2024
Ministry of Education of the People's Republic of China
2017-2024
Peking University First Hospital
2023
Peking University
2023
Shanxi Medical University
2023
Sinopec (China)
2023
China National Environmental Monitoring Center
2019
Air Force Engineering University
2008-2011
Nanjing Medical University
2009-2011
The accurate determination of coal temperature in hidden space such as goaf has always been a worldwide problem that needs to be solved. research prediction model important practical significance for the detection loose temperature. Based on natural ignition experiment and spontaneous combustion gas characterization index initial data set GRU neurons are used mine nonlinear relationship between temperature, parameters optimized by PSO obtain predicted value body results show MAE PSO-GRU is...
Coal gangue spontaneous combustion has caused serious environmental and ecological problems. To investigate the reaction kinetic parameters of exothermic characteristics influence law, this study employs thermogravimetric method to explore characteristic pyrolysis oxidative process from perspective thermodynamics, and, at same time, using differential scanning calorimetry (DSC) on effect obtain original coal TG/DTG/DSC curves be compared thermodynamics. The change rule potential in (CG) were...
The accurate prediction of coal spontaneous combustion (CSC) in the goaf areas mines is a vital aspect migration from passive to active fire prevention and control. However, CSC highly complicated existing technologies cannot accurately monitor temperatures over wide expanses. Thus, it may be beneficial assess based on various index gases produced by reactions coal. In present study, process was simulated temperature-programmed experiments, relationships between gas concentrations with...
Oxygen concentration of the oxidation combustion zone in coalfield fire and coal spontaneous dangerous area mine such as goaf sealed are all lower than that normal atmospheric. Also, these two areas have characteristics high temperature. Therefore, this paper, XKGW-1 type temperature experiment device had been designed manufactured independently. It was employed to investigate entire process by using test method programmed. Five oxygen concentrations, 21, 17, 9, 5, 3 vol%, were tested,...
Airtight walls are vital to prevent spontaneous combustion of residual coal as caused by air leakage. A new type foamed concrete (FC) was developed control FC specimens four densities (250, 450, 650, and 850 kg/m 3 ) were prepared for use in a series physical mechanical tests. thickener used the shrinkage collapse. The permeability decreased approximately exponentially with an increasing density. On contrary, compressive strength ( σ elastic modulus E increased exponential linear...
A computational fluid dynamics model is established to investigate the behavior of fire smoke spreading in L-shaped utility tunnels with small curvature radii (R). The evolution process for R = 0–25 m and critical ventilation velocities (V) 0.5–3.0 m/s analyzed, Richardson number (Ri) introduced determine value development back-layering. results show that V strongly influence fire-induced spatiotemporal characteristics such tunnels. Smaller or higher are associated stronger centrifugal...
High-temperature poisonous smoke produced by coal mine roadway fire seriously affects miners' lives and safety. Studying the development law of high-temperature in process then exploring danger are great significance to personnel safety post-disaster rescue. In order study this problem, CFD numerical simulation method is used establish a calculation model based on ANSYS Fluent software stage fire. The flue gas flow during simulated, variation temperature field concentration with time space...
Fire extinguishing with the superior performance of fly ash composite colloid material is a cost‐effective fire prevention technology. In this paper, new powder additive (suspending agent (XK‐XJ) and gelling agent) was developed for existing technology compound colloid. Tests show that best additions to slurry were 0.3% 0.1∼0.3%, respectively. The grouting technical scheme adding suspending on ground downhole proposed solve problems solid settlement blockage in long‐distance pipeline...
The study of wearable systems based on surface electromyography (sEMG) signals has attracted widespread attention and plays an important role in human-computer interaction, physiological state monitoring, other fields. Traditional sEMG signal acquisition are primarily targeted at body parts that not line with daily wearing habits, such as the arms, legs, face. In addition, some rely wired connections, which impacts their flexibility user-friendliness. This paper presents a novel wrist-worn...
The functional group structures of coal molecules are one the most important factors affecting spontaneous combustion. However, it is difficult to determine exact effects such structures. Extraction technology able modify groups in as a means inhibiting combustion reactions. present work extracted from Caojiatan mine northern Shaanxi, China, with various solvents. extraction effectiveness these solvents was found decrease order dioctyl sulfosuccinate (AOT) > water n-hexane cyclohexane +...