The Xing? Rockfill Dam

by Aur?lio A. Vasconcelos,
Luiz Paulo Eigenheer,



Document Type: Proceeding Paper

Part of: Concrete Face Rockfill Dams?Design, Construction, and Performance

Abstract:

The concrete-face rockfill dam of the 5,000MW Xingo Hydroelectric Project in Brazil, is at the bidding stage at the present time. The dam has a maximum height of 460 ft (140m) and the embankment volume is about 16,470,000 cu yd (12,600,000m**3). The Project site and the type of dam were selected by means of technical-economic analyses. Zoning of the embankment suits compressibility and permeability requirements. The downstream cofferdam is incorporated into the embankment. Rockfill reinforcing is used to prevent downstream flooding and site losses due to cofferdam overtopping in first diversion flood season. Dry season raising of a portion of the rockfill gives 1:500 yr protection for the following flood season.

Subject Headings: Rockfill dams | Embankment dams | Rock fills | Floods | Seasonal variations | Cofferdams | Zoning | Brazil | South America

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