A5059198087- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Fire dynamics and safety research
- Advanced Battery Technologies Research
- Evacuation and Crowd Dynamics
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Fire Detection and Safety Systems
- Hydraulic Fracturing and Reservoir Analysis
- Underground infrastructure and sustainability
- Wind and Air Flow Studies
- Flow Measurement and Analysis
- Lightning and Electromagnetic Phenomena
- Advanced Battery Materials and Technologies
- Traffic and Road Safety
- Ultrasonics and Acoustic Wave Propagation
- Drilling and Well Engineering
- Enhanced Oil Recovery Techniques
- Seismic Waves and Analysis
- Energy Load and Power Forecasting
- High voltage insulation and dielectric phenomena
- Stock Market Forecasting Methods
- High-Voltage Power Transmission Systems
- Power Transformer Diagnostics and Insulation
- Education, Safety, and Science Studies
Zhengzhou University of Light Industry
2022-2024
China University of Mining and Technology
2019-2021
Fire incidents in energy storage stations are frequent, posing significant firefighting safety risks. To simulate the fire characteristics and inhibition performances by fine water mist for lithium-ion battery packs an energy-storage cabin, PyroSim software is used to build a 1:1 experimental geometry model of containerized cabin. The simulation reveals five stages their characteristic parameter variations during incident: initial temperature rise, flame generation, spread, stable...
Abstract High concentration and large flow flux of gas drainage from underground coal seams is the precondition reducing emission large-scale use gas. However, layered occurrence with tectonically deformed sub-layers intact makes it difficult to effectively drain through commonly designed boreholes. In this study, performance in different combinations was numerically analyzed. The analysis results show that curve changes a single-stage line dual-stage as permeability ratios Zone II ( k ) I...
Underground coalbed methane extraction is an important way for preventing coal mine gas disasters and reducing greenhouse emission, but air leakage around boreholes a critical factor that limits efficient extraction. Dynamically filling plugging fractures can prevent leakage. Due to the invisibility complexity of underground geological formations, observing process effectiveness extremely challenging. To visualize quantitatively characterize performances in coal. First, experiments are...
Firefighting in high-rise buildings remains a difficult problem the world because fire extinguishing equipment and tactics have many deficiencies dealing with such building fires, especially for higher than 50 m. In present study, LY100 system is taken as an example to introduce application of drone control buildings. The mainly contains twin-rotor drone, high-pressure liquid equipment, pressure associated vehicle agent. can be deployed quickly operated flexibly. Based on advantages, indoor...
Abstract Predrainage of gas by cross‐boreholes is an important method to prevent coal and outbursts in the process a roadway excavation. Limitations technologies poor effects preventing occur seam with soft layer. In this study, new hydraulic caving technology for has been proposed solve problem. A CT equipment was used observe development fissures around The plastic zone range permeability distribution ordinary slotting also were compared numerical simulation. field test taken Xuehu Mine...
As an important part of the power system, oil-immersed transformers have a complex structure with large oil storage capacity and high-risk factor.The fire simulation software PyroSim was used to simulate burning process under different scenarios, in order investigate vulnerability transformer fire.Surface according results: from oilimmersed tends form plume ignite other components such as bushings.The ambient wind speed where is located has effect on spread fire's flames; rates heat release...
Coal mine methane (CMM) drainage is an effective method to curb the occurrence of coal and gas outburst explosion, reduce amount greenhouse emission, make full use clean energy(methane). Sealing in-seam horizontal boreholes plays a vital role in CMM drainage. Reasonable sealing length important factor achieve high extraction efficiency cost construction. To determine minimum reasonable boreholes, radius fracture zone was obtained based on ideal elastoplastic model, this taken as length. The...
In actual mining situations, the advancing speed of working face is usually accelerated, which may affect failure and seepage characteristics gas-bearing coal, even induce dynamic disasters. order to discover effects such accelerated advancement face, an experimental study on coal under loading unloading conditions was carried out in this work. The results showed that energy release more violent impactful paths. time required for sample significantly shortened. After being destroyed, breakup...
In the context of a fire emergency, safe and efficient exits are paramount importance for pedestrian evacuation. The recent rapid development in construction industry has rendered exit structures more diverse complex. However, little attention been paid to influence on efficiency crowd evacuation processes. this paper, tentative experiment was designed preliminarily reveal effects five (Exit 1, Exit 2, 4, 5, 3 as examples comparison) 1 door leaves opening outward. 2 inward. no leaves. 4...
The combustion of lithium-ion batteries is characterized by fast ignition, prolonged duration, high temperature, release significant energy, and generation a large number toxic gases. Fine water mist has characteristics such as fire extinguishing efficiency environmental friendliness. In order to thoroughly investigate the temperature control effect fine on battery fires. This study employs numerical simulation methods, utilizing PyroSim software simulate process in energy storage...
In order to study the influence of wind direction on fire spread building facades, a three-dimensional model high-rise was built with PyroSim software. Numerical simulations were conducted five directions (0°, 45°, 90°, 135° and 180°) reference speed 3 m/s. The results show that facade most significant leeward side, followed by upwind condition. horizontal promoted crosswinds at 90° 135°, while its vertical inhibited. Among these, inhibitory effect 45° crosswind greatest. area under...