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Place

Tachira state - Venezuela


Client

CONINTUR Joint venture: Astaldi Estero, Cogefar, local contractor


Year

1981 - 1983

Description for Uribante Doradas Hydropower (Venezuela)

Hydroelectric project with IP = 300 MW.

Main Features

  • La Honda Dam, zoned earth fill with central vertical impervious core ( H = 140 m; L = 560 m; V = 9.3 Mm³ )
  • Upper Headrace Tunnel ( L = 6.6 km, A = 22 m² )
  • Surge Shaft ( H = 134 m, A = 113 m² )
  • Pressure Shaft, partly steel lined ( H = 271 m, A = 22 m² )
  • Lower Headrace Tunnel ( L = 1.2 km, A = 22 m² )
  • Steel Lined Underground Penstocks ( No. 2; L = 360 m; D = 3 m )
  • Outdoor Power House equipped with two pelton turbines with a distributor of six nozzles ( D = 3.3 m; n = 225 rev/min )
  • Ancillary Works: intake structures, drainage tunnels around the surge shaft, above the penstocks and the lower headrace tunnel, access galleries for construction and inspection purposes
 

Engineering Services

  • Overall revision of the final design
  • Consultancy for the selection and the optimization of the underground excavation and support techniques
  • Campaign of laboratory and in situ tests for the geotechnical characterization of rock masses and the rock bolting methods

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