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Diversion of the Parana River for the Yacyreta Hydroelectric Project

by Eugene J. Gemperline, Harza Engineering Co, Chicago, United States,
Radun S. Laban, Harza Engineering Co, Chicago, United States,



Document Type: Proceeding Paper

Part of: Waterpower '91: A New View of Hydro Resources

Abstract:

The diversion and closure of one of the world's largest rivers, the Parana River on the border of Paraguay and Argentina, for the 2760 MW Yacyreta Hydroelectric Project, sponsored by the Entidad Binacional Yacyreta (EBY), are described. Engineering studies and prototype construction are presented. The diversion scheme is developed. Mathematical and physical model studies by the project consultants, Consultores Internacionales de Yacyreta (CIDY), and the project constructors, Empresas Reunidas Impreglio - Dumez y Asociados de Yacyreta (ERIDAY UTE) to evaluate proposed methods of closure are developed and evaluated. Engineering studies are described for three phases: development of project and diversion facility design; mathematical model studies following award of the contract. First phase studies described include project layout, diversion considerations in layout of hydraulic facilities, and use of the project spillway for diversion. Second phase studies described include development of the mathematical model for simulation of rockfill cofferdam placement, verification of the model to physical model studies and use of the model to evaluate proposed diversion schemes. Third phase studies described include development and use of three-dimensional comprehensive physical models to develop and evaluate proposed methods of closure. Parana River closure operations are described. Rock placement rates and progress of the construction are provided.

Subject Headings: Rivers and streams | Project management | Physical models | Mathematical models | Hydro power | Simulation models | Cofferdams | Parana River | South America | Paraguay | Argentina

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