A5100391693- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Fire dynamics and safety research
- Underground infrastructure and sustainability
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Adhesion, Friction, and Surface Interactions
- Coal and Its By-products
- Tribology and Lubrication Engineering
- Geoscience and Mining Technology
- Safety and Risk Management
- Heme Oxygenase-1 and Carbon Monoxide
- Mineral Processing and Grinding
- Adaptive Control of Nonlinear Systems
- Mechanical stress and fatigue analysis
- Electromagnetic Launch and Propulsion Technology
- Belt Conveyor Systems Engineering
- Guidance and Control Systems
- Earthquake Detection and Analysis
- Gear and Bearing Dynamics Analysis
- Flame retardant materials and properties
- Fire Detection and Safety Systems
- Industrial Gas Emission Control
- Hydraulic Fracturing and Reservoir Analysis
Shandong University of Science and Technology
2024
CCTEG Shenyang Research Institute
2020-2023
China Coal Research Institute (China)
2020-2023
State Key Laboratory of Coal Mine Safety Technology
2020-2022
China University of Mining and Technology
2022
Hebei Science and Technology Department
2021
Shijiazhuang Tiedao University
2021
Hunan Vocational College of Safety Technology
2020
Abstract The surface of the coating or substrate structure has a rough topological over multiple scales, which significantly affects actual contact area and adhesion strength. In order to investigate potential interferences during test mass (TM) release process locking mechanism in TianQin space-borne gravitational wave detection project, an analytical model Johnson-Kendall-Roberts (JKR) adhesive with roughness between TM tip (RT) been developed. This work presents integration JKR theory...
The phenomenon of coal spontaneous combustion poses a serious threat to mine safety, and monitoring warning has become an important issue that needs be urgently addressed in mines. current early methods for have their limitations, single indicator cannot accurately mark the degree danger inside goaf. Therefore, this article proposes new method through infrasound waves. Infrasound waves advantages such as low attenuation long transmission distance. However, research on goaf is not yet...
With the potential safety hazard of coal spontaneous combustion becomes more and serious, in order to solve problems low water absorption rate high cost hydrogel inhibitor, this study, a superabsorbent lignin-based composite inhibitor (SAP + SLS Ben) was prepared. The absorption/retention rate, micromorphology, inhibition capacity, air-leakage blocking efficiency fire-extinguishing performance SAP Ben were studied. Results have revealed that: had excellent capacity; SEM images that sodium...
The disaster regularity of conveyor belt fire has always been the focus mine prevention and control. In order to study pyrolysis combustion characteristics different types belts, BET model was used calculate specific surface area pore size distribution belts. Various chemical bonds or functional groups contained in belts were tested by infrared spectrum, structural parameters spectrum calculated split-peak fitting, so as quantitatively analyze change rule content each active group....
Fire hazard-risk area in small coal pits can be found the southern part of Shigetai Coal Mine, a close-distance seam mining sector Shendong area, which is susceptible to risk harmful toxic gas intrusion, seriously threatening safety around working surface. Aiming at this problem, numerical model representing activity on seams was established simulate movement pattern overlying strata and development process fractures based horizontal stress “normalization” technology. Also, principal...
To prevent coal spontaneous combustion and store CO2 in the mine, it is necessary to establish a fire-prevention pipeline transport system which continuously injects large amount of liquid from ground underground area directly. At present, few studies are focused on law with great altitude difference. Moreover, complex environment mine affects design application for direct injection CO2. This study explores influence environmental factors at different depths transport. Excessive difference,...
To address environmental damage, improve the efficiency of inhibitors in preventing spontaneous combustion coal, an antioxidant-type high-efficiency composite inhibitor was synthesized by solution polymerization. Using scanning electron microscope, water retention test, temperature programmed thermogravimetric and other experiments, inhibition mechanism on coal oxidation elucidated. The results showed that new successfully realized resource utilization EP, ATP added to mix well with EPH. Mg...
摘要: 为揭示CO2注入煤岩力学响应特征及机理，回顾了CO2注入煤岩力学性质影响因素、CO2注入对煤岩大分子-孔隙-裂隙结构改造作用和煤岩力学参数的统计模型、理论模型与智能预测模型.结果表明：CO2注入煤岩力学性质受控于煤阶、CO2压力、水分、围压和时间等因素，CO2注入压力的增高、水的加入及时间的延长均会进一步降低煤岩力学性质，而围压对CO2注入力学性能弱化具有一定改善作用.CO2水溶液通过溶胀作用、萃取作用和塑化作用促使煤岩大分子结构重组，通过微晶结构改变、化学溶蚀和非均匀变形改造煤岩孔隙结构，通过化学溶蚀、膨胀应力和化学-应力耦合作用诱发煤岩结构损伤，均不同程度引起煤岩力学性能弱化.在CO2注入煤岩力学参数预测模型中，类Langmuir模型、广延指数模型和修正的粘聚力模型具有明确的物理意义，而智能预测模型具有更高的预测精度，预测准确度可达99%以上.本次研究为科学评价CO2-ECBM安全性和促进深部煤层CO2高效注入奠定了理论基础. 关键词: CO2-ECBM / 力学性质 弱化机理 多尺度结构 预测模型 油气地质