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    Mathematical Modeling and Experimental Verification of Fluid Flow through Deformable Rough Rock Joints

    Source: International Journal of Geomechanics:;2015:;Volume ( 015 ):;issue: 004
    Author:
    Buddhima
    ,
    Indraratna
    ,
    Chandrasiri
    ,
    Kumara
    ,
    Song-Ping
    ,
    Zhu
    ,
    Scott
    ,
    Sloan
    DOI: 10.1061/(ASCE)GM.1943-5622.0000413
    Publisher: American Society of Civil Engineers
    Abstract: Rock joints exert an enormous influence on the permeability of a rock mass because they act as interconnecting networks that provide pathways for fluids to permeate and flow within the rock structure. The apertures in rock joints are irregular in nature and induce flows that cannot be described by the parallel-plate theory based on planar joints or the classical cubic flow relationships. In this study, a two-dimensional (2D) hydraulic aperture distribution was considered to develop a mathematical model for fracture flow. In this approach, the three-dimensional Navier-Stokes equation was integrated over the joint aperture and converted to an equivalent 2D flow model. The proposed model was then solved numerically by adopting a well-known algorithm for coupling the pressure and velocity and implementing it in a computer program. The selected program is capable of predicting the deformation of the joint apertures on normal loading, the resulting flow patterns, and the volumetric flow rates associated with permeability tests conducted using a high-pressure triaxial apparatus that was designed and built at the University of Wollongong. The model output for different conditions of confining stresses and hydraulic gradients was computed, and a good agreement with the experimental results was observed.
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      Mathematical Modeling and Experimental Verification of Fluid Flow through Deformable Rough Rock Joints

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    http://yetl.yabesh.ir/yetl1/handle/yetl/72099
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    • International Journal of Geomechanics

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    contributor authorBuddhima
    contributor authorIndraratna
    contributor authorChandrasiri
    contributor authorKumara
    contributor authorSong-Ping
    contributor authorZhu
    contributor authorScott
    contributor authorSloan
    date accessioned2017-05-08T22:08:18Z
    date available2017-05-08T22:08:18Z
    date copyrightAugust 2015
    date issued2015
    identifier other31842000.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/72099
    description abstractRock joints exert an enormous influence on the permeability of a rock mass because they act as interconnecting networks that provide pathways for fluids to permeate and flow within the rock structure. The apertures in rock joints are irregular in nature and induce flows that cannot be described by the parallel-plate theory based on planar joints or the classical cubic flow relationships. In this study, a two-dimensional (2D) hydraulic aperture distribution was considered to develop a mathematical model for fracture flow. In this approach, the three-dimensional Navier-Stokes equation was integrated over the joint aperture and converted to an equivalent 2D flow model. The proposed model was then solved numerically by adopting a well-known algorithm for coupling the pressure and velocity and implementing it in a computer program. The selected program is capable of predicting the deformation of the joint apertures on normal loading, the resulting flow patterns, and the volumetric flow rates associated with permeability tests conducted using a high-pressure triaxial apparatus that was designed and built at the University of Wollongong. The model output for different conditions of confining stresses and hydraulic gradients was computed, and a good agreement with the experimental results was observed.
    publisherAmerican Society of Civil Engineers
    titleMathematical Modeling and Experimental Verification of Fluid Flow through Deformable Rough Rock Joints
    typeJournal Paper
    journal volume15
    journal issue4
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0000413
    treeInternational Journal of Geomechanics:;2015:;Volume ( 015 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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