The Xingō Rockfill Dam

by Aurēlio A. Vasconcelos,
Luiz Paulo Eigenheer,

Document Type: Proceeding Paper

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

Discussion: Gao Keming (See full record)
Discussion: de Matos Waldo Duarte (See full record)
Closure: (See full record)


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: Seasonal variations | Rockfill dams | Rock fills | Earthfill dams | Rivers and streams | Cofferdams | Soil analysis | Permeability (soil) | Brazil | South America

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