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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic B: Water Engineering in Support of Built Environments : Physical modeling of diversion works for the baker and pascua rivers
Physical modeling of diversion works for the baker and pascua rivers
Author : Ricardo González, Rodrigo Cienfuegos, Bonifacio Fernández,J. Jorge Bravo, Carlos Costas and Octavio Garcés
The Aysén Hydroelectric Project considers the construction of 5 dams in the Baker and Pascua rivers in the southernmost part of Chile. Both rivers in the project area are characterized by narrow valleys, high slopes ( > 1%-2%) and large streamflows that range between 600 and 800 m3/s during the low flow season. In order to study the diversion of the rivers, two scaled physical hydraulic models (1:70 for the Baker river and 1:60 for the Pascua river) were built at the Hydraulic Laboratory of the Pontificia Universidad Católica de Chile to test different methods for cofferdam construction. In this study, we investigate the use of a combination of precast concrete elements such as cubes, tetracubes and tetrapods, along with the use of graduated soil and rock fills to produce a semiimpervious cofferdam. This report presents a summary of the experimental work conducted in the physical models, focusing on the final adopted solution which considers the use of 30 t tetrapods and graduated soil and rock fills to achieve impermeability of the cofferdams.

File Size : 1,017,203 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic B: Water Engineering in Support of Built Environments
Date Published : 09/08/2009
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