Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

The inherent features of concrete face rockfill dams and the trend of building higher dams have been recently questioned by three recent incidents where major dams have experienced significant cracking in the central portion of the dam after the first filling. The incidents include the dams of Mohale in South Africa, and Barra Grande and Campos Novos in Brazil, the last one being the highest dam of its type built in the world. The design and development of CFRD dams, have been based primarily on precedent and empiricism, however, these recent incidents have shown that the extrapolation of precedent with the current procedures can have serious consequences. This paper present the recent behavior of some of these high dams, as well as the development of numerical analyses (FEM) capable of reproducing observed behavior. It also discuss the design features that are being considered to avoid this unacceptable observed behavior, and the numerical simulations that have been performed to validate these design features for the Porce III hydroelectric project.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Recent Experience on Design, Construction and Performance of CFRD Dams

Arlington, Virginia

The inherent features of concrete face rockfill dams and the trend of building higher dams have been recently questioned by three recent incidents where major dams have experienced significant cracking in the central portion of the dam after the first filling. The incidents include the dams of Mohale in South Africa, and Barra Grande and Campos Novos in Brazil, the last one being the highest dam of its type built in the world. The design and development of CFRD dams, have been based primarily on precedent and empiricism, however, these recent incidents have shown that the extrapolation of precedent with the current procedures can have serious consequences. This paper present the recent behavior of some of these high dams, as well as the development of numerical analyses (FEM) capable of reproducing observed behavior. It also discuss the design features that are being considered to avoid this unacceptable observed behavior, and the numerical simulations that have been performed to validate these design features for the Porce III hydroelectric project.