Equivalent Continuum Coupling-Based Slope Stability Analysis of Zhouning Pumped Storage Power Station

A 3D equivalent continuum coupling analysis of the slope of the Zhouning pumped storage power station was proposed in this study. Firstly, the hydraulic properties of rock mass, groundwater, and deformation mechanism under high-frequency fluctuations of the water level are analyzed. Secondly, the th...

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Bibliographic Details
Published inGeofluids Vol. 2021; pp. 1 - 13
Main Authors Lin, Jinhong, Zhu, Yongsheng, Hou, Jing, Pan, Bing, Chu, Weijiang, Huang, Wenhong
Format Journal Article
LanguageEnglish
Published Chichester Hindawi 2021
John Wiley & Sons, Inc
Hindawi Limited
Hindawi-Wiley
Subjects
Algorithms
Anisotropy
Continuum modeling
Coupling
Deformation
Deformation mechanisms
Digital imaging
Equivalence
Groundwater
Hydraulic properties
Hydraulics
Mechanical properties
Permeability
Photogrammetry
Potassium
Power plants
Pumped storage
Rock masses
Rock properties
Rocks
Seepage
Slope stability
Stability analysis
Statistical analysis
Technology application
Tensile strength
Terrain models
Three dimensional analysis
Three dimensional models
Water level fluctuations
Water levels
Water, Underground
China
Fujian China
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Summary:A 3D equivalent continuum coupling analysis of the slope of the Zhouning pumped storage power station was proposed in this study. Firstly, the hydraulic properties of rock mass, groundwater, and deformation mechanism under high-frequency fluctuations of the water level are analyzed. Secondly, the three-dimensional Digital Terrain Model (DTM) with surface image information was established by digital photogrammetry technology for cataloging field fracture information. Third, stress-seepage coupling simulation using a hybrid grid approach and the FLAC3D equivalent continuum model was implemented. The results show that the permeability of rock mass is stress-dependent and anisotropic, and the direction of maximum principal permeability of both bank slopes is approximately parallel to the river. Slope deformations induced by impoundment during the operation period are the superposition results of two mechanisms, referred to as “mattress effect” and “swelling effect.” Attention should be paid to the tensile strength of the rock mass during operation.
ISSN:1468-8115
1468-8123
DOI:10.1155/2021/9926751