Santa Luzia Dam

Santa Luzia Dam (Portuguese: Barragem de Santa Luzia) is a concrete arch dam on the Unhais, a northern tributary of the Zêzere River, located in the municipality Pampilhosa da Serra, in Coimbra District, Portugal. The dam was constructed between 1930 and 1942[1] and was designed by André Coyne.[2]

Santa Luzia Dam
Santa Luzia Dam
Location of Santa Luzia Dam in Portugal
Official nameBarragem de Santa Luzia
Locationmunicipality Pampilhosa da Serra, Coimbra District, Portugal
Coordinates40°5′23.2″N 7°51′28.8″W
StatusOperational
Construction began1930
Opening date1942
Dam and spillways
Type of damConcrete arch dam
ImpoundsUnhais
Height76 metres (249 ft)
Length115 metres (377 ft)
Width (crest)2.5 metres (8 ft 2 in)
Dam volume80,000 m3 (2,800,000 cu ft)
Reservoir
CreatesSanta Luzia Reservoir
Total capacity53,700,000 m3 (1.90×109 cu ft)
Surface area2.46 km2 (0.95 sq mi)
Power Station
Commission date1942
Turbines4 x 8 MW Pelton-type
Installed capacity32 MW
Annual generation55 GWh

Design

Santa Luzia Dam is a 76 m tall and 115 m long arch dam. The volume of the dam is 80.000 m³. The dam contains 2 crest spillways and one bottom outlet. At full reservoir level the reservoir of the dam (Portuguese: Albufeira da Barragem de Santa Luzia) has a surface area of 2.46 km² and its total capacity is 53.7 Mio m³.[1]

The concrete of the dam is affected by concrete swelling, caused by an alkali–silica reaction, that leads to tensions and cracks in the concrete.[3][4]

Power plant

The power plant is one of the smaller hydroelectric power stations in Portugal with a nameplate capacity of 32 MW. Its average annual generation is 55 Mio. kWh. The power station contains four Pelton turbine-generators.[1]

See also

References
  1. "SANTA LUZIA DAM". Comissão Nacional Portuguesa de Grandes Barragens (CNPGB). Retrieved 2014-11-09.
  2. "Santa Luzia Dam". Structurae International Database for Civil and Structural Engineering. Retrieved 2014-11-09.
  3. "RELIABILITY OF ARCH DAMS SUBJECT TO CONCRETE SWELLING" (PDF). www.xitizap.com. pp. 10–11. Retrieved 2014-11-09.
  4. "A REVIEW AND ANALYSIS OF AAR-EFFECTS IN ARCH DAMS" (PDF). www.xitizap.com. p. 4. Retrieved 2014-11-09.
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