Yuanping Cheng
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View article: Effect of Deviatoric Stress on Deformation Energy of Tectonic Coal: A Modified Energy Model Considering Nonlinearity
Effect of Deviatoric Stress on Deformation Energy of Tectonic Coal: A Modified Energy Model Considering Nonlinearity Open
The deformation energy stored in soil‐like tectonic coal plays a critical role in coal and gas outbursts. Unlike hard rocks, tectonic coal exhibits pronounced stress–strain nonlinearity, invalidating traditional elastic energy models. Base…
View article: Permeability Model Sets Based on REV Strains and the Mesoscale Deformation Law of Coal and Sensitivity Analysis of Key Parameters
Permeability Model Sets Based on REV Strains and the Mesoscale Deformation Law of Coal and Sensitivity Analysis of Key Parameters Open
Accurate prediction of permeability can be of great help in the exploitation of coal-bed methane resources. Based on the representative element volume (REV) and cubic law, a series of novel permeability models have been derived in this stu…
View article: Shear Failure and Hydraulic Fracture Propagation in Tight Sandstone: Quantitative Characterization Under Varying Normal Stresses
Shear Failure and Hydraulic Fracture Propagation in Tight Sandstone: Quantitative Characterization Under Varying Normal Stresses Open
View article: Investigation into the Gas-Liquid-Solid Energy Mathematical Modeling of Methane-Bearing Coal and its Spatiotemporal Distribution Characteristics
Investigation into the Gas-Liquid-Solid Energy Mathematical Modeling of Methane-Bearing Coal and its Spatiotemporal Distribution Characteristics Open
View article: Exploring the 3d Spatial Distribution of Energy and its Control Over Gas Migration Mechanisms
Exploring the 3d Spatial Distribution of Energy and its Control Over Gas Migration Mechanisms Open
View article: Spontaneous Tubal Heterotopic Pregnancy: A Retrospective Observational Case Series Study
Spontaneous Tubal Heterotopic Pregnancy: A Retrospective Observational Case Series Study Open
View article: Method for Calculating the Absolute Methane Adsorption Capacity Considering the Adsorbed Phase Volume: A Correction for Free Space Measurement
Method for Calculating the Absolute Methane Adsorption Capacity Considering the Adsorbed Phase Volume: A Correction for Free Space Measurement Open
View article: Study of methane and carbon dioxide adsorption-desorption hysteresis in coals from Sydney Basin: A theoretical and experimental approach
Study of methane and carbon dioxide adsorption-desorption hysteresis in coals from Sydney Basin: A theoretical and experimental approach Open
Methane (CH4) and carbon dioxide (CO2) are primary components of coal seam gas (CSG). Understanding their adsorption-desorption hysteresis characteristics, along with the fundamental mechanism, is crucial for CSG exploitation and related h…
View article: Determining the Optimal Duration of Effective Sieving Time Based on Sieve Characteristic of Coal Particle
Determining the Optimal Duration of Effective Sieving Time Based on Sieve Characteristic of Coal Particle Open
View article: Numericalization of Particle Method: A Novel Method for Gas Diffusion Coefficient Determination Based on Inverse Problem Numerical Simulation
Numericalization of Particle Method: A Novel Method for Gas Diffusion Coefficient Determination Based on Inverse Problem Numerical Simulation Open
View article: Methane as Probes for Characterizing Pore Volume in Coalbed Gas Reservoir: Expanding the Pore Analysis Method
Methane as Probes for Characterizing Pore Volume in Coalbed Gas Reservoir: Expanding the Pore Analysis Method Open
View article: Stress-unloading and gas migration improvement mechanism in the soft and hard interbedded coal seam using directional hydraulic flushing technology
Stress-unloading and gas migration improvement mechanism in the soft and hard interbedded coal seam using directional hydraulic flushing technology Open
To enhance gas drainage in the soft and hard interbedded (SHI) coal seam, it’s necessary to unload the in-situ stress and improve its gas migration performance. In this research, a directional hydraulic flushing (DHF) technology was carrie…
View article: Characteristics of Microporous Structure in Macromolecular Structure of Bituminous Coal and its Effect on Gas Adsorption Capacity
Characteristics of Microporous Structure in Macromolecular Structure of Bituminous Coal and its Effect on Gas Adsorption Capacity Open
View article: Critical Stress Related to Coalbed Methane Migration Pattern: Model Development and Experimental Validation
Critical Stress Related to Coalbed Methane Migration Pattern: Model Development and Experimental Validation Open
View article: Effects of Micro-Mesopore Structure Characteristics on Methane Adsorption Capacity of Medium Rank Coal
Effects of Micro-Mesopore Structure Characteristics on Methane Adsorption Capacity of Medium Rank Coal Open
View article: Evolution of Composition and Methane Occurrence of Bituminous Coal after Igneous Intrusion: A Case Study of Daxing Coal Mine, Tiefa Basin, China
Evolution of Composition and Methane Occurrence of Bituminous Coal after Igneous Intrusion: A Case Study of Daxing Coal Mine, Tiefa Basin, China Open
Since 1987, there have been 10 coal and gas outbursts in Daxing Coal Mine, Tiefa Basin. It was reported that these outbursts were related to igneous intrusion. To study the influence of igneous intrusion into bituminous on coal bed methane…
View article: Experimental analysis of pore structure and fractal characteristics of soft and hard coals with same coalification
Experimental analysis of pore structure and fractal characteristics of soft and hard coals with same coalification Open
Accurate and quantitative investigation of the physical structure and fractal geometry of coal has important theoretical and practical significance for coal bed methane (CBM) development and the prevention of dynamic disasters such as coal…
View article: Pressure Relief Mechanism and Gas Extraction Method during the Mining of the Steep and Extra-Thick Coal Seam: A Case Study in the Yaojie No. 3 Coal Mine
Pressure Relief Mechanism and Gas Extraction Method during the Mining of the Steep and Extra-Thick Coal Seam: A Case Study in the Yaojie No. 3 Coal Mine Open
Gas disasters, such as coal and gas outburst and gas overflow, always occur during the mining of the steep and extra-thick coal seam in the horizontal, fully mechanized, top coal slice caving (HFMTCSC) method. To solve these issues and gua…
View article: Diffusion Process of Methane in Coal Particles and its Relationship with Pore Scale
Diffusion Process of Methane in Coal Particles and its Relationship with Pore Scale Open
View article: Effect of Moisture on Methane Time-Varying Diffusion Kinetics of Low-Rank Coal
Effect of Moisture on Methane Time-Varying Diffusion Kinetics of Low-Rank Coal Open
View article: Experimental Analysis of Pore Structure and Fractal Characteristics of Soft and Hard Coals With Same Coalification
Experimental Analysis of Pore Structure and Fractal Characteristics of Soft and Hard Coals With Same Coalification Open
Accurate and quantitative investigation of the physical structure and fractal geometry of coal has important theoretical and practical significance for coal bed methane and the prevention of dynamic disasters such as coal and gas outbursts…
View article: Analysis of the Coal and Gas Outburst Mechanism from the Perspective of Tectonic Movement
Analysis of the Coal and Gas Outburst Mechanism from the Perspective of Tectonic Movement Open
Coal and gas outburst is the extreme instability caused by stress, gas, and coal. In this review article, dominant factors and inducing factors of outburst were summarized; geologic features of typical outburst cases and the effects of tec…
View article: Guiding Effect of Soft Tectonic Coal on Coal and Gas Outburst and its Experimental Study
Guiding Effect of Soft Tectonic Coal on Coal and Gas Outburst and its Experimental Study Open
Soft tectonic coal commonly exists in coal and gas outburst zones. The physical simulation experiment was carried out to reproduce the influences of soft coal area on the outburst, and the guiding action mechanism of soft tectonic coal on …
View article: Energy-limiting factor for coal and gas outburst occurrence in intact coal seam
Energy-limiting factor for coal and gas outburst occurrence in intact coal seam Open
This research reviewed the mechanics and gas desorption properties of intact coal, and tested the crushing work ratios of different intact coals, and then, studied the stress conditions for the failure or crushing of intact coal and the ga…
View article: Effects of pore morphology and moisture on CBM‐related sorption‐induced coal deformation: An experimental investigation
Effects of pore morphology and moisture on CBM‐related sorption‐induced coal deformation: An experimental investigation Open
Coalbed methane (CBM) is an important resource of energy. For CBM recovery, sorption‐induced coal deformation can cause significant reservoir permeability change. Moisture content and coal pore morphology affect the gas adsorption capacity…
View article: Numerical simulation of magma intrusion on the thermal evolution of low rank coal
Numerical simulation of magma intrusion on the thermal evolution of low rank coal Open
To study the effect of magma intrusion on the thermal evolution of low-rank coal with high water content, the mathematical relationship between water content variation and thermal conductivity of low-rank coal was analyzed by COMSOL Multip…
View article: Investigation of the fractal characteristics of adsorption‐pores and their impact on the methane adsorption capacity of various rank coals via N<sub>2</sub> and H<sub>2</sub>O adsorption methods
Investigation of the fractal characteristics of adsorption‐pores and their impact on the methane adsorption capacity of various rank coals via N<sub>2</sub> and H<sub>2</sub>O adsorption methods Open
Coal seam is a sedimentary body with complex pore system. The gas adsorption property of coal is greatly determined by the adsorption‐pores ( 2.7‐2.8, the influence of the specific surface area is more prominent. The equilibrium moisture c…
View article: Establishment of the equivalent structural model for the tectonic coal and some implications for the methane migration
Establishment of the equivalent structural model for the tectonic coal and some implications for the methane migration Open
The establishment of the equivalent structural model (ESM) is the foundation to simplify the structures of the coal matrix and fractures for the study of methane migration.
View article: Model development and analysis of coal permeability based on the equivalent characteristics of dual-porosity structure
Model development and analysis of coal permeability based on the equivalent characteristics of dual-porosity structure Open
Mining is a dynamic fracture process of coal and/or rock. The structural failure of coal bodies will change the coal matrix-fracture characteristics and then affect the distribution characteristics of the coalbed methane (CBM). Because of …
View article: Time-Dependence of Mechanical Property Alterations on Anthracite Coals Treated by Supercritical Carbon Dioxide
Time-Dependence of Mechanical Property Alterations on Anthracite Coals Treated by Supercritical Carbon Dioxide Open
The injection of supercritical carbon dioxide (Sc-CO 2 ) into coal seams remarkably changes the physical-chemical structures of coal mass and thereby improves coal mechanical properties. In this study, a series of unconfined and triaxial c…