Location
Arlington, Virginia
Date
14 Aug 2008, 4:30pm - 6:00pm
Abstract
Seepage and water flow is one of the most important factors in design of embankment dams. The seepage through the foundation of earth dams can be controlled using the concrete cut off walls. The hydraulic head reduces in connection zone of the cut off wall and core of the dam that results to high hydraulic gradients. As a result, erosion and water leakage may occur. In this regard, the design of concrete cut off wall connection to the clayey core of earth dam is important. In this research, the total flow and the hydraulic gradient are considered to study the seepage through different cut off wall connection systems. The Karkheh storage dam with a plastic concrete cut off wall is selected for the seepage analysis. Six different connection systems are modeled and the effect of physical and mechanical factors like, the cut off wall permeability and the geometry of the connection systems on the total flow and the maximum hydraulic gradient are investigated. The connection systems with minimum flow and hydraulic gradient are determined. According to the results, the cut off wall connection system is an important part that affects the flow in earth dams. In this regard, the connection system with the most effective characteristics and suitability in construction is determined.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, 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
Zoorasna, Zakaria; Hamidi, Amir; and Ghanbari, Ali, "Seepage Through Different Concrete Cut Off Wall Connection Systems Case Study: Karkheh Storage Dam" (2008). International Conference on Case Histories in Geotechnical Engineering. 47.
https://scholarsmine.mst.edu/icchge/6icchge/session02/47
Seepage Through Different Concrete Cut Off Wall Connection Systems Case Study: Karkheh Storage Dam
Arlington, Virginia
Seepage and water flow is one of the most important factors in design of embankment dams. The seepage through the foundation of earth dams can be controlled using the concrete cut off walls. The hydraulic head reduces in connection zone of the cut off wall and core of the dam that results to high hydraulic gradients. As a result, erosion and water leakage may occur. In this regard, the design of concrete cut off wall connection to the clayey core of earth dam is important. In this research, the total flow and the hydraulic gradient are considered to study the seepage through different cut off wall connection systems. The Karkheh storage dam with a plastic concrete cut off wall is selected for the seepage analysis. Six different connection systems are modeled and the effect of physical and mechanical factors like, the cut off wall permeability and the geometry of the connection systems on the total flow and the maximum hydraulic gradient are investigated. The connection systems with minimum flow and hydraulic gradient are determined. According to the results, the cut off wall connection system is an important part that affects the flow in earth dams. In this regard, the connection system with the most effective characteristics and suitability in construction is determined.
