A5063027818- Coal Properties and Utilization
- Geoscience and Mining Technology
- Safety and Risk Management
- Hydrocarbon exploration and reservoir analysis
- Geomechanics and Mining Engineering
- Combustion and Detonation Processes
- Advanced Sensor and Control Systems
- Rock Mechanics and Modeling
- Atmospheric and Environmental Gas Dynamics
- Advanced Algorithms and Applications
- Inertial Sensor and Navigation
- Glass properties and applications
- Methane Hydrates and Related Phenomena
- Hydraulic Fracturing and Reservoir Analysis
- Erosion and Abrasive Machining
- Nuclear materials and radiation effects
- Evaluation and Optimization Models
- Indoor and Outdoor Localization Technologies
- Thermochemical Biomass Conversion Processes
- Evaluation Methods in Various Fields
- Geotechnical and Geomechanical Engineering
- Geophysics and Sensor Technology
- Particle Dynamics in Fluid Flows
- Luminescence Properties of Advanced Materials
- High-Velocity Impact and Material Behavior
North China University of Science and Technology
2011-2025
Central China Normal University
2023
Qilu University of Technology
2023
Shandong Academy of Sciences
2023
Hospital of Hebei Province
2021
China University of Geosciences (Beijing)
2020
Hebei University
2011-2012
Shanxi Datong University
2011
Polytechnic University
2008-2009
Xiaomi (China)
2008
The correlation between the spontaneous combustion tendency of coal and its properties are great importance for safety issues, environmental concerns, economic problems. In this study, relationship multiple parameters, different from previous single parameter, was analyzed. comprehensive judgment index (CJI), which indicates combustion, obtained samples collected mines. CJI measured by cross-point temperature had a negative with tendency. Physical pore structures chemical functional groups...
The synergistic utilization of multiple solid waste is an effective means achieving green filling and resource in mines. In this paper, the effects granulated blast furnace slag (GS) carbide (CS) as cementitious materials (GCCM) are investigated, along with their preliminary feasibility combination coal gangue (CG) bottom (FBS) for preparation backfill materials. hydration mechanism, mechanical properties, working performance GCCM GBC were studied, environmental impact cost-effectiveness...
Coal seam water injection is widely applied to prevent mine disasters. In the traditional migration model of water-injected coal, from ignoring capillary force in seepage stage generating dynamic during spontaneous imbibition state, no transition state exists 0 force. this paper, on basis theoretical analysis, an equivalent term introduced modify Forchheimer model, and then a seepage-transition-spontaneous that suitable for coal proposed. The formulas upper critical point velocity v1, lower...
ABSTRACT Achieving environmental sustainability is of utmost importance to economies worldwide, regardless their level development. As a result, most international have accepted several accords deal with issues on global scale. Reducing reliance fossil fuels has been broadly recognized as the pinnacle sustainability, even though various strategies are believed address these challenges. In light above, this study employs data from 1990 2022 examine effects nuclear power, increased usage...
In order to investigate P-containing flame retardant on coal spontaneous combustion, trisodium phosphate, sodium hexametaphosphate, and ammonium polyphosphate were selected. Raw inhibitor solution (10 wt%) mixed at weight ratio 4:1. Coal (raw coal, inhibited coals) oxidation reaction was measured by own designed temperature-programming device. Simultaneous TG-DSC carried out. Evolution of CO with increasing temperature cross point (CPT) obtained reaction; these results showed that the...
The technology of increasing coal seam permeability by high-pressure water jet has significant advantages in preventing and controlling gas disasters low-permeability seam. structural parameters a nozzle are the key to its performance. majority current studies take strike velocity as evaluation index, influence interaction between nozzle’s on performance is not fully considered. In practice, area will affect release process breaking punching. To further optimize punching nozzle, improve...
PDR positioning is currently the core issue of autonomous positioning, there a problem high noise and interference in dynamic measurement using (Pedestrian Dead Reckoning) MEMS (Micro-Electro-Mechanical System) device, which often low precision multi-source integration sensor. Two new models improved spectral subtraction (ISS) PDRS (PDR-Spectral subtraction) are constructed this paper according to spectrum features periodic generated from personnel stepping positioning. It proposed two-stage...
Abstract A numerical simulation method combining detailed chemical reaction mechanism of methane deflagration with approximate real tunnel structure was proposed to confirm whether the unevenness wall during coal mine gas explosion can be ignored. The model and smooth were developed using 3D modeling methods. propagation attenuation processes shock waves in two models, as well different dynamic responses walls, are compared analyzed. Research results show that non-uniformity decreases wave...
The pursuit of novel and efficient adsorbents is vital in potentially toxic elements wastewater treatment. A block-like geopolymer, utilizing 92 wt.% fly ash, was synthesized to serve as a cost-effective adsorbent for Cu(II). Fly ash-based porous geopolymer (FAPGM) with 80.11% porosity, 38.080 m 2 g −1 specific surface area 0.886 MPa compression strength obtained through process parameters optimization. FAPGM exhibited excellent adsorption performance, maximum capacity 62.70 mg can be...
The technology of coal breaking and punching by a high-pressure water jet can increase the permeability seam prevent gas explosion accidents. As one key components this technology, structural parameters nozzle have an important effect on performance jet. At present, relationship between multiple optimization indexes is mostly studied separately. In fact, influence different different. When there are indexes, they should be considered collaboratively to achieve best nozzle. Therefore,...
It is important that precise positioning and navigation of underground personnel for intelligent hedging mine rescue in accidents or disasters. At present, there are many passive methods such as RFID, Zigbee other products the underground, which cannot work normally while power supply interruption signal underground. GRPM a new active method combining radio frequency identification geomagnetic matching technology, accuracy reach to sub-meter level when miner with device Geomagnetic algorithm...
Coal seam gas pressure is one of the fundamental parameters used to assess coal occurrence and an important index in assessing risk disaster. However, geological characteristics seams become increasingly complex with increasing mining degree, thus decreasing accuracy success rate direct methods for measuring pressure. To address such issues, we have developed a new method measurement water-bearing seams. In particular, device based on theoretical analysis quantified basic well testing. Then,...