Results 1 to 10 of about 3,071,603 (205)
Impact of gas adsorption-induced coal damage on the evolution of coal permeability
International Journal of Rock Mechanics and Minings Sciences, 2018 Abstract During the injection of CO 2 into coalbed for geologic sequestration, CO 2 is likely both adsorbed and dissolved in coals, and swells them slightly. When coal is swollen due to the adsorption and dissolution, the induced strain is relieved as the coal structure rearranges to a lower free energy state, causing coal damage and resulting in ...
Wancheng Zhu, Liyuan Liu, Jishan Liu
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Experimental and analytical investigation on the coupled elastoplastic damage model of coal-rock
Fracture and Structural Integrity, 2020 In this paper, a novel coupled elastoplastic damage model for coal-rock is proposed to predict the deformation and potential disaster in coal mining. The conditions of small deformation and thermodynamic potential are considered, as well as the coupling ...
Yundong Shou +2 more
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Effects of coal damage on permeability and gas drainage performance
International Journal of Mining Science and Technology, 2017 Coal permeability is a measure of the ability for fluids to flow through coal structures. It is one of the most important parameters affecting the gas drainage performance in underground coal mines.
Chunshan Zheng +2 more
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Damage‐induced permeability model of coal and its application to gas predrainage in combination of soft coal and hard coal [PDF]
Energy Science and Engineering, 2019 AbstractCoal permeability is a key parameter that affects the drainage of coal bed methane (CBM). Owing to the lower original permeability of coal seams in China, more attention was paid to the study of damage‐induced permeability laws. However, the theory of damage‐induced permeability still needs to be improved.
Yongliang Zhang +2 more
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Investigation on the long-term damage evolution of a strip coal pillar
Scientific ReportsThe long-term stability of water-immersed coal pillars in proximity to urban areas is critical for ensuring the safety of urban development. This study investigates the creep damage evolution in strip coal pillars through a comprehensive approach ...
Xueliang Li +5 more
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Damage constitutive model of uniaxially compressed coal material considering energy dissipation
Journal of Materials Research and Technology, 2023 Peilei Zhang +2 more
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Meitan xuebao, 2023 Currently the law of heat and mass transfer and the analysis of coal damage in the process of injecting low-temperature liquid nitrogen (LN2) into the borehole of coal seam are the key problems to be solved urgently for the application of LN2 in the ...
Yuzhou CONG +7 more
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Meitan kexue jishu, 2023 Water-rock interaction is common seen in underground mining engineering activities. In order to study the mechanical properties, damage characteristics and deterioration mechanism of coal-rock combined samples under water-rock interaction, axial ...
Guangbo CHEN +5 more
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Sustainability, 2023 Borehole pre-drainage is an important technical means to control a coal mine gas disaster. In order to determine the optimal pre-drainage parameters of Dashucun mine, a coal damage permeability evolution model was established based on coal damage ...
Dangyu Zhang +5 more
semanticscholar +1 more source
Experimental Study on Coal Permeability and Damage Evolution Under the Seepage-Stress Coupling
Frontiers in Earth Science, 2022 In order to study the damage evolution law of coal under the seepage-stress coupling, this paper adopted the rock servo triaxial test system to conduct permeability test for full stress-strain process on 10 sets of coal specimens using steady-state ...
Fujin Lin +5 more
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