Water Science and Engineering 2018, 11(3) 250-257 DOI:   https://doi.org/10.1016/j.wse.2018.10.004  ISSN: 1674-2370 CN: 32-1785/TV

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Concrete-faced rockfill dam (CFRD)
Generalized equivalent continuum model
Node virtual flow method
Fractured rock mass
Seepage field
Seepage coefficient

Seepage simulation of high concrete-faced rockfill dams based on generalized equivalent continuum model

Shou-kai Chena, b, c, d, Qi-dong Hea, b, d, *, Ji-gang Caoa

a School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
b Henan Key Laboratory of Water Environment Simulation and Treatment, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
c Academician Workstation of Water Environment Governance and Ecological Restoration, Zhengzhou 450002, China
d Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China


This research focused on the three-dimensional (3D) seepage field simulation of a high concrete-faced rockfill dam (CFRD) under complex hydraulic conditions. A generalized equivalent continuum model of fractured rock mass was used for equivalent continuous seepage field analysis based on the improved node virtual flow method. Using a high CFRD as an example, the generalized equivalent continuum range was determined, and a finite element model was established based on the terrain and geological conditions, as well as structural face characteristics of the dam area. The equivalent seepage coefficients of different material zones or positions in the dam foundation were calculated with the Snow model or inverse analysis. Then, the 3D seepage field in the dam area was calculated under the normal water storage conditions, and the corresponding water head distribution, seepage flow, seepage gradient, and seepage characteristics in the dam area were analyzed. The results show that the generalized equivalent continuum model can effectively simulate overall seepage patterns of the CFRD under complex hydraulic conditions and provide a reference for seepage analysis of similar CFRDs.

Keywords Concrete-faced rockfill dam (CFRD)   Generalized equivalent continuum model   Node virtual flow method   Fractured rock mass   Seepage field   Seepage coefficient  
Received 2017-10-10 Revised 2018-05-24 Online: 2018-07-30 
DOI: https://doi.org/10.1016/j.wse.2018.10.004

This work was supported by the National Natural Science Youth Foundation of China (Grant No. 51309101), the Henan Province Major Scientific and Technological Projects (Grant No. 172102210372), and the Cooperative Project of Production, Teaching and Research in Henan Province (Grant No. 18210700031).

Corresponding Authors: Qi-dong He
Email: E-mail address: Rituy@foxmail.com
About author:


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