34 Result(s)
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Article
Mingzhong Gao
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Article
Theoretical and experimental validation of mining-enhanced permeability for simultaneous exploitation of coal and gas
Simultaneous recovery of coal and methane is a promising solution for making reasonable use of energy resources and preventing gas disasters. Coal mining produces an effect that enhances the permeability of co...
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The relationships among stress, effective porosity and permeability of coal considering the distribution of natural fractures: theoretical and experimental analyses
Although the relationships among stress, effective porosity and permeability of coal are a fundamental research topic that has been studied for decades and are widely used in analyzing the mechanical behavior ...
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Elliptical fracture network modeling with validation in Datong Mine, China
Roof-coal recovery rate and the performance of gas extraction are essentially controlled by the fractures within coal-rock mass. Thus, it is important to generate the accurate fracture network ahead of mining ...
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Coal permeability model on the effect of gas extraction within effective influence zone
In situ gas extraction is the main measure adopted by mines to achieve mining safety standards. Coal permeability is significantly influenced by coal shrinkage during gas release. Based on effective stress and...
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Lessons Learnt from Measurements of Vertical Pressure at a Top Coal Mining Face at Datong Tashan Mines, China
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Mining-Induced Coal Permeability Change Under Different Mining Layouts
To comprehensively understand the mining-induced coal permeability change, a series of laboratory unloading experiments are conducted based on a simplifying assumption of the actual mining-induced stress evolu...
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The Location Optimum and Permeability-Enhancing Effect of a Low-Level Shield Rock Roadway
High (low)-level roadways are effective gas control measures for coal seams with high outburst potential and low permeability. The spatial location of the low-level roadway directly determines the gas drainag...
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Study on the Mechanical Properties and Mechanical Response of Coal Mining at 1000 m or Deeper
As shallow coal resources are gradually depleted, resource exploitation extends from the shallow into the deep, where the mechanical properties of the coal rocks change significantly. To study the mechanical p...
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Deformation Damage and Energy Evolution Characteristics of Coal at Different Depths
As coal mining is extended to greater depths, it is found that the mechanical behavior of deep coal differs from the mechanical behavior of shallow coal, resulting in a significant increase in accidents. To ex...
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Determination of the Dynamic Propagation Toughness of Marble Based on a Fractal Propagation Model and an Experimental–Numerical–Analytical Method
Precracked chevron-notched Brazilian disc specimens were impacted by a split Hopkinson pressure bar to determine the dynamic propagation toughness of marble. The dynamic expansion process of the crack was meas...
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Energy Evolution of Coal at Different Depths Under Unloading Conditions
To explore the differences in deformation failure and energy evolution and simulate the real excavation conditions of coal masses at different depths during the coal-mining process, an unloading failure experi...
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Acoustic Emission Characteristics and Damage Evolution of Coal at Different Depths Under Triaxial Compression
To obtain a comprehensive understanding of the difference between deep and shallow rocks, and the damage evolution laws of a rock mass at different depths, a case study was conducted on the **dingshan Coal M...
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Variations in the physical and mechanical properties of rocks from different depths in the Songliao Basin under uniaxial compression conditions
With the development of deep energy resources, understanding variations in the physical and mechanical properties of rocks at different depths is significant. In this paper, core samples from ten different bur...
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Permeability-enhanced rate model for coal permeability evolution and its application under various triaxial stress conditions
Knowledge on permeability enhancement is of great significance for the exploitation of coalbed methane, shale gas, and tight gas. In this study, the volumetric strain of rocks is considered to be one of the mo...
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Open AccessProteomics provides insights into the inhibition of Chinese hamster V79 cell proliferation in the deep underground environment
As resources in the shallow depths of the earth exhausted, people will spend extended periods of time in the deep underground space. However, little is known about the deep underground environment affecting th...
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Experimental and Numerical Study of the Influence of Prefabricated Crack Width on the Fracture Toughness of NSCB Specimens
The accuracy measurement of rock fracture toughness is one of the basic tasks of rock fracture mechanics. In order to study the influence of the width of the prefabricated crack on the fracture toughness of ro...
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The fracturing models of hard roofs and spatiotemporal law of mining-induced stress in a top coal caving face with an extra-thick coal seam
Hard roof fracturing characteristics and mining-induced stress behaviors can be studied to ensure production safety in top coal caving face. Field tests were conducted at top coal caving face No. 8309 in the T...
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Fractal evolution and connectivity characteristics of mining-induced crack networks in coal masses at different depths
In situ capture of crack network evolution is extremely difficult but necessary in fundamental research on mining mechanics and coalbed methane extraction. Systematic field monitoring of the mining-induced cra...
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Contributory Factors and Distribution Characteristics of Asymmetric Deformation in Deep Tunnel
Aiming at the asymmetric deformation of the surrounding rock in deep tunnels, from the perspective of the mechanical environment of the rock layer, the physical characteristics of the surrounding rock and the ...
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Open AccessThe novel idea and technical progress of lunar in-situ condition preserved coring
The moon is rich in material resources, lunar-based sampling is the foundation for an in-depth understanding of lunar material resources endowment characteristics, exploring the evolution of lunar geological s...
