Location
New York, New York
Date
15 Apr 2004, 1:00pm - 2:45pm
Abstract
The upstream cofferdam of Xiluodu hydraulic power station project, with height of 72 meters, is designed as the main body of the project. It is characterized by its high retaining water head, short construction period and complex geological conditions. Presented in this paper is a three-dimensional FEM analysis used to investigate the seepage behavior of the upstream cofferdam for two different design schemes. In the analysis, the cracks in cut-off wall which may be caused in construction are also properly considered. Based on 3D seepage model of saturated-unsaturated flow for non-uniform soils, a fixed-mesh FEM is used in the seepage analysis of the upstream cofferdam. As the results of the analysis, the distribution of water head and discharge of seepage are obtained and compared. The seepage stability of the cofferdam is analyzed to be safe enough based on the new concept called critical gradient zone.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Zhang, Ga and Zhang, Jian-Min, "A FEM Seepage Analysis for Upstream Cofferdam of Xiluodu Hydraulic Power Station" (2004). International Conference on Case Histories in Geotechnical Engineering. 10.
https://scholarsmine.mst.edu/icchge/5icchge/session02/10
A FEM Seepage Analysis for Upstream Cofferdam of Xiluodu Hydraulic Power Station
New York, New York
The upstream cofferdam of Xiluodu hydraulic power station project, with height of 72 meters, is designed as the main body of the project. It is characterized by its high retaining water head, short construction period and complex geological conditions. Presented in this paper is a three-dimensional FEM analysis used to investigate the seepage behavior of the upstream cofferdam for two different design schemes. In the analysis, the cracks in cut-off wall which may be caused in construction are also properly considered. Based on 3D seepage model of saturated-unsaturated flow for non-uniform soils, a fixed-mesh FEM is used in the seepage analysis of the upstream cofferdam. As the results of the analysis, the distribution of water head and discharge of seepage are obtained and compared. The seepage stability of the cofferdam is analyzed to be safe enough based on the new concept called critical gradient zone.
