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    THMD Coupling Model for Water-Conducting Fracture Zones of Mines Based on Dual-Porosity Media

    Source: International Journal of Geomechanics:;2025:;Volume ( 025 ):;issue: 005::page 04025052-1
    Author:
    Changyu Xu
    ,
    Lijun Han
    ,
    Kai Wang
    ,
    Xiaohui Chen
    DOI: 10.1061/IJGNAI.GMENG-10343
    Publisher: American Society of Civil Engineers
    Abstract: The surrounding rock undergoes damage and fracture under the disturbance of mining stress, which can easily form water-conducting fracture zones and cause water-inrush disasters in water-rich mines. Due to the complexity of the media in the water-inrush channel and the coupled environment of various physical fields, the establishment of the seepage model in the water-conducting fracture zones remains a long-term challenge. In this study, the water-inlet part of the fracture zone, dominated by pores and fractures, is simplified as a dual-porosity medium. Then, based on mixture coupling theory, the thermodynamic consistent constitutive model for the dual-porosity media considering stress, damage, heat, and seepage coupling is established using the nonequilibrium thermodynamics method, which is the fully coupled thermal–hydro–mechanical–damage model (THMD). Meanwhile, the dynamic evolution equations of stress, porous matrix porosity, and fracture porosity are derived when multiple physical fields are coupled. Finally, the numerical simulation is conducted with finite-element software to further illustrate the coupling phenomenon in the dual-porosity medium of the water-conducting fracture zone.
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      THMD Coupling Model for Water-Conducting Fracture Zones of Mines Based on Dual-Porosity Media

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4307414
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    • International Journal of Geomechanics

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    contributor authorChangyu Xu
    contributor authorLijun Han
    contributor authorKai Wang
    contributor authorXiaohui Chen
    date accessioned2025-08-17T22:46:02Z
    date available2025-08-17T22:46:02Z
    date copyright5/1/2025 12:00:00 AM
    date issued2025
    identifier otherIJGNAI.GMENG-10343.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4307414
    description abstractThe surrounding rock undergoes damage and fracture under the disturbance of mining stress, which can easily form water-conducting fracture zones and cause water-inrush disasters in water-rich mines. Due to the complexity of the media in the water-inrush channel and the coupled environment of various physical fields, the establishment of the seepage model in the water-conducting fracture zones remains a long-term challenge. In this study, the water-inlet part of the fracture zone, dominated by pores and fractures, is simplified as a dual-porosity medium. Then, based on mixture coupling theory, the thermodynamic consistent constitutive model for the dual-porosity media considering stress, damage, heat, and seepage coupling is established using the nonequilibrium thermodynamics method, which is the fully coupled thermal–hydro–mechanical–damage model (THMD). Meanwhile, the dynamic evolution equations of stress, porous matrix porosity, and fracture porosity are derived when multiple physical fields are coupled. Finally, the numerical simulation is conducted with finite-element software to further illustrate the coupling phenomenon in the dual-porosity medium of the water-conducting fracture zone.
    publisherAmerican Society of Civil Engineers
    titleTHMD Coupling Model for Water-Conducting Fracture Zones of Mines Based on Dual-Porosity Media
    typeJournal Article
    journal volume25
    journal issue5
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/IJGNAI.GMENG-10343
    journal fristpage04025052-1
    journal lastpage04025052-12
    page12
    treeInternational Journal of Geomechanics:;2025:;Volume ( 025 ):;issue: 005
    contenttypeFulltext
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