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
Santa Luzia Dam is located in Portugal
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 / 40.089778°N 7.858000°W / 40.089778; -7.858000
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

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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

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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

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References

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  1. ^ a b c "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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