RESEARCH ARTICLE
Seepage Control in a High Concrete Face-Rock Fill Dam Based on the Node Virtual Flow Method
Shou-Kai Chen1, Xiaoyue Zhang2, *
Article Information
Identifiers and Pagination:
Year: 2016Volume: 10
First Page: 547
Last Page: 560
Publisher ID: TOBCTJ-10-547
DOI: 10.2174/1874836801610010547
Article History:
Received Date: 06/05/2016Revision Received Date: 25/10/2016
Acceptance Date: 04/11/2016
Electronic publication date: 14/12/2016
Collection year: 2016
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
The seepage control system of a high Concrete Face Rock-Fill Dam (CFRD) may have anti-seepage deficiencies during both construction and operation. In order to solve these, the three-dimensional Finite Element Method (FEM) model was built based on dam body filling, anti-seepage system, defect location and bedrock distribution. The seepage field simulation and computation were carried out using an improved node virtual flux method and the zero-thickness crack model theory. The water head distribution, seepage lines and dam leakage field were obtained by simulation under different conditions, and the seepage characteristics during construction and operation were analyzed systematically. Taking a high CFRD as an example, the results showed that during the flood-control construction period, the incomplete nature of the dam face slab can lead to seepage damage near the second seepage control line. Moreover, during operation period; the seepage control system was still effective when the dam face slab was incomplete.