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    Three-Dimensional Stability Analysis of Bank Slopes with Reservoir Drawdown Based on Rigorous Limit Equilibrium Method

    Source: International Journal of Geomechanics:;2020:;Volume ( 020 ):;issue: 012
    Author:
    Xiao-Ping Zhou
    ,
    Xiong Wei
    ,
    Chao Liu
    ,
    Hao Cheng
    DOI: 10.1061/(ASCE)GM.1943-5622.0001877
    Publisher: ASCE
    Abstract: The fluctuation of reservoir water levels has significant impact on bank slope stability near a reservoir. Therefore, it is necessary to analyze the stability of bank slopes with reservoir drawdown. In this paper, a novel method combining the seepage force with rigorous limit equilibrium method is proposed to analyze the stability of bank slopes near the reservoir. First, the calculation method of the phreatic surface and the seepage force is developed. Then, six equilibrium equations are established based on the equilibrium conditions of three forces along the coordinate axis and the equilibrium conditions of three moments around the coordinate axes. Finally, a trust–region–reflective iterative algorithm is used to determine the safety factor of bank slopes from these six equations. Moreover, the effects of drawdown speed, the height of the drawdown, permeability coefficient, and the aquifer thickness on bank slope stability are investigated using the proposed method. Two engineering cases of Ataden I landslide and Guanyinping landslide are used to verify the correctness and practicability of the proposed method.
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      Three-Dimensional Stability Analysis of Bank Slopes with Reservoir Drawdown Based on Rigorous Limit Equilibrium Method

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4268867
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    • International Journal of Geomechanics

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    contributor authorXiao-Ping Zhou
    contributor authorXiong Wei
    contributor authorChao Liu
    contributor authorHao Cheng
    date accessioned2022-01-30T21:48:16Z
    date available2022-01-30T21:48:16Z
    date issued12/1/2020 12:00:00 AM
    identifier other%28ASCE%29GM.1943-5622.0001877.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4268867
    description abstractThe fluctuation of reservoir water levels has significant impact on bank slope stability near a reservoir. Therefore, it is necessary to analyze the stability of bank slopes with reservoir drawdown. In this paper, a novel method combining the seepage force with rigorous limit equilibrium method is proposed to analyze the stability of bank slopes near the reservoir. First, the calculation method of the phreatic surface and the seepage force is developed. Then, six equilibrium equations are established based on the equilibrium conditions of three forces along the coordinate axis and the equilibrium conditions of three moments around the coordinate axes. Finally, a trust–region–reflective iterative algorithm is used to determine the safety factor of bank slopes from these six equations. Moreover, the effects of drawdown speed, the height of the drawdown, permeability coefficient, and the aquifer thickness on bank slope stability are investigated using the proposed method. Two engineering cases of Ataden I landslide and Guanyinping landslide are used to verify the correctness and practicability of the proposed method.
    publisherASCE
    titleThree-Dimensional Stability Analysis of Bank Slopes with Reservoir Drawdown Based on Rigorous Limit Equilibrium Method
    typeJournal Paper
    journal volume20
    journal issue12
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0001877
    page10
    treeInternational Journal of Geomechanics:;2020:;Volume ( 020 ):;issue: 012
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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