A5068785414- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Fire dynamics and safety research
- Methane Hydrates and Related Phenomena
- Coal and Its By-products
- Geoscience and Mining Technology
- Flame retardant materials and properties
- Combustion and Detonation Processes
- Fire Detection and Safety Systems
- CO2 Sequestration and Geologic Interactions
- Evacuation and Crowd Dynamics
- Polymer Nanocomposites and Properties
- Geomechanics and Mining Engineering
- Fire effects on ecosystems
- Safety and Risk Management
- Thermochemical Biomass Conversion Processes
- Drilling and Well Engineering
- Atmospheric and Environmental Gas Dynamics
- Pickering emulsions and particle stabilization
- Spectroscopy and Laser Applications
- Thermal and Kinetic Analysis
- Chemical Looping and Thermochemical Processes
- Heme Oxygenase-1 and Carbon Monoxide
- Automotive and Human Injury Biomechanics
Xi'an University of Science and Technology
2018-2025
Ministry of Education of the People's Republic of China
2020-2024
Lanzhou University of Technology
2020
Coal spontaneous combustion in goaf seriously affects the safety of mine production, and air leakage is one prerequisites for coal combustion. Taking ultra-long working face with a length 410 m as an example, due to insufficient compaction degree goaf, high development large-scale cracks, large flow pressure difference between intake return air, law not clear, risk broken residual increases. Based on physical mechanical parameters rock, this paper studies plastic failure fracture under...
With the increase in mine depth, original rock temperature rises under influence of geothermal gradient. High surrounding heat dissipation leads to an working face temperature, seriously affecting mining production safety. Using distributed fiber optic measurement study thermal characteristics during production, maintenance, and shutdown. The results show that airflow exhibits a "V"-shaped trend, decreasing first then increasing, while it shows "L"-shaped trend with initial decrease followed...
To explore the effects of methane on characteristics coal spontaneous combustion, low-temperature oxidation and Fourier transform infrared spectroscopy experiments were conducted. The tested airflows had an oxygen–nitrogen ratio 0.266, concentrations 0−3% by volume. Moreover, various types quantities functional groups investigated. results show that CO/CO2 production oxygen consumption rates higher for samples under airflow atmospheres containing than without methane. However, apparent...
Hydrogels are crosslinked polymers that become fully swollen when placed in aqueous environments. They widely used the field of firefighting because they can remarkably increase viscosity and wettability water. In this study, a thermosensitive hydrogel to effectively suppress class A fire was synthesized by using methylcellulose, sodium polyacrylate, magnesium chloride. The structure, surface activity were characterized. Fire extinguishing performance evaluated based on small-scale...
Abstract Silica gel‐coated hydrotalcite (LDHs) flame retardants (SiLDHs‐Ce) are prepared by the sol–gel method. The synergistic effect of SiLDHs‐Ce and expandable graphite (EG) on silicone rubber foam (SRF) is studied through limiting oxygen index (LOI), Cone Calorimeter Test (CC), thermogravimetric infrared spectrometer (TG‐IR), scanning electron microscopy. results show that EG can improve retardant properties SRF materials. LOI value material reach 40.1% when ratio to 2:1, heat release...
Coal spontaneous combustion disasters frequently appear in the process of coal mining, which brings great-hidden danger to mine safety production. To effectively inhibit combustion, HPMC/PEG/CS thermosensitive hydrogels with quick phase-transition response times and excellent thermal stability have been developed this study. Then, effects hydrogel on microscopic groups molecules at corresponding temperature heating processes are analyzed by using Fourier transform infrared spectrometry,...
Mining high-gas coal seams in China has the characteristics mining of deep, high storage and low permeability, drainage efficiency, which seriously restrict efficient prevention control mine gas disasters. Based on viscosity phase change pressurization, strong adsorption potential energy liquid CO2, technology system CO2 displacement for low-permeability seam was developed, field industrial low-pressure (0.5~2.5 MPa) medium-pressure (2.5~15.0 combined injection test carried out. In this...