A5030524451- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Geoscience and Mining Technology
- Geomechanics and Mining Engineering
- Methane Hydrates and Related Phenomena
- Geotechnical and Geomechanical Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Landslides and related hazards
- CO2 Sequestration and Geologic Interactions
- Geophysical Methods and Applications
- Atmospheric and Environmental Gas Dynamics
- Seismic Imaging and Inversion Techniques
- Mineral Processing and Grinding
- Spacecraft and Cryogenic Technologies
- Seismology and Earthquake Studies
- Advanced Sensor and Control Systems
- Safety and Risk Management
- Earthquake Detection and Analysis
- Geotechnical Engineering and Underground Structures
- Cyclone Separators and Fluid Dynamics
- Heat and Mass Transfer in Porous Media
- NMR spectroscopy and applications
- Combustion and Detonation Processes
Chongqing University
2016-2025
Shandong University of Science and Technology
2020
China Coal Research Institute (China)
2007-2009
Abstract The horizontal stress in the fractured blocks of a zone is relief status under repeated mining disturbances. To investigate effect on stability overlying strata, uniaxially graded cyclic loading and unloading experiments red sandstone with different initial level were carried out. First, evolution elastic modulus, irreversible strain load-unload response ratio analyzed. Then, energy damage variable characteristics examined. Finally, voussoir beam structure disturbances was...
The permeability of coal seam is an important parameter that affects the production coalbed methane and storage CO2. Therefore, it great significance to elucidate evolution under different injection conditions during enhanced recovery with CO2 sequestration (CO2-ECBM). In this study, a fully coupled mathematical model thermal–hydraulic–mechanical (THM) in CO2-ECBM process was established first. Moreover, validity THM developed paper verified. Finally, mechanism influence on reservoirs...
In this study, the effect of stress amplitude on mechanical behavior mudstone was systematically investigated by cyclic loading and unloading experiments acoustic emission (AE) monitoring. The results show that at low-stress amplitudes, specimens better elastic recovery ability, lower damage accumulation higher structural stability. At high-stress irreversible increases significantly, internal fractures gradually expand penetrate through, risk instability significantly. This is manifested...
A microseismic (MS) monitoring system in a mine can monitor the MS signals generated by coal rock rupture and blasting waves distinguish two types of more clearly to analyze evolution process rock. According nonlinearity characteristics waveform, fractal mine’s are analyzed simple multifractal theory, dimension [Formula: see text] parameters obtained, respectively. Results show that reflects complexity frequency structure wave. The wave is larger than wave, which indicates relatively complex...
Abstract During the operation of artificial underground structures, surrounding rock experiences fatigue and creep damage caused by several types disturbances under long-term constant loading. To quantify mechanical response sandstone creep–fatigue loading, a damage–hardening evolution model based on linear superposition concept is proposed. In model, coupling applied to represent synergistic effect fatigue. Creep–fatigue tests specimens are conducted multilevel The hardening effects loading...
A proper understanding of permeability reductions CH4-containing coal seams after CO2 injection is essential, as the key parameter influencing efficiency enhanced coalbed methane recovery with sequestration and theoretical research on it lacking. The main objective this study was to accurately quantify effects permeability. Therefore, decrease coefficients rebound pressures a binary gas (CH4 + CO2) are proposed based Shi–Durucan extended Langmuir models. Then, trends these parameters under...
Abstract Strain rock burst is one of the main types bursts. Studying mechanical response and acoustic emission characteristics coal under quasi-static loading significant to control prevent strain In this paper, coal’s strength, deformation, energy evolution, failure were analyzed with different rates loading. The strength show a rate effect certain extent elastic modulus decreases first then increases stain increasing. Moreover, samples always accounts for high proportion before presents...
The distribution and conduction properties of overburden fractures following coal extraction beneath a shallowly buried, proximate seam group are extremely complex. These primary source air leakage within the mining zone contribute to oxygen-deficient conditions at working face. Therefore, in this study, physical similarity simulation experiments used quantitatively analyze conductivity characteristics during shallow buried close group. results show that with increase distance, high level...