Grand Maison

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Grand Maison
Barrage de Grand'Maison.JPG
Location: Isère and Savoie , France
Drain: Eau d'OlleRomanche
Larger places nearby: Vaujany
Grand-Maison (France)
Grand Maison
Coordinates 45 ° 12 ′ 10 ″  N , 6 ° 7 ′ 0 ″  E Coordinates: 45 ° 12 ′ 10 ″  N , 6 ° 7 ′ 0 ″  E
Data on the structure
Construction time: 1978-1985
Height above valley floor: 140 m
Height above foundation level : 160 m
Height of the structure crown: 1700  m
Building volume: 12.4 or 12.9 million m³
Crown length: 550 m
Crown width: 10 m
Base width: 520 m
Power plant output: 1,800 MW
Data on the reservoir
Altitude (at congestion destination ) 1695  m
Water surface 2.19 km²
Storage space 137 million m³
Catchment area 50 km²

The dam Grand-Maison (French Barrage de Grand'Maison ) is located in the French Alps in the valley of the Eau d'Olle between the mountain ranges of Belledonne and Grandes Rousses , about 25 kilometers east of Grenoble in the town of Vaujany in the departments of Isère and Savoie in of the Auvergne-Rhône-Alpes region . The dam forms the Lac de Grand Maison, which is 1695 m above sea level.

dam

The dam is a rock embankment dam. The bulk material required for this was extracted in a quarry approx. 800 m from the location of the dam. The dam was planned by the Coyne & Bellier office. After a construction period from 1978 to 1985, it was put into operation in 1988. The dam was for a long time the highest rock embankment dam in Europe and was (probably) overtaken in 2006 by the Kárahnjúkavirkjun dam at 193 m.

Hydroelectric power plant

Together with the Verney dam , it forms the hydropower plant of the Eau-d'Olle valley, which also has the function of a pumped storage plant . It is the most powerful hydropower plant in France. The power plant's turbines and generators are housed in two separate machine houses. Four Pelton turbines , each with a capacity of 150 MW, are housed in the first, above-ground machine house. The second, underground nacelle contains eight Francis turbines , each with 150 MW output, which can also be used as pumps. The power plant output is therefore 1,800 MW and the pump output 1,200 MW. The difference in altitude between the upper basin, the dam of Grand-Maison, and the lower basin, the dam of Verney, is 926 m.

literature

  • C. Guitton: Carrière du barrage de Grand'Maison. Données du projet, modalités d'exploitation, dispositif d'auscultation . In: Industrie minérale. Les techniques . 1984, No. 10, ISSN  0240-9542 , pp. 771-785.

See also

Commons : Barrage de Grand'Maison  - collection of images, videos and audio files

Web links

Individual evidence

  1. a b c http://energie.edf.com/fichiers/fckeditor/Commun/En_Direct_Centrales/Hydraulique/Centres/Les_Alpes/publications/documents/FicheamenagementGrandMaison.pdf
  2. http://globalenergyobservatory.org/geoid/42969