Grand Maison
Grand Maison | |||||||
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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
- List of the largest dams on earth
- List of the largest reservoirs on earth
- List of the largest hydroelectric plants in the world
- List of dams in the world
Web links
- Data about Grand-Maison (Engl.)
- Data on Grand-Maison (French)
- Barrage de GRAND'MAISON
- Grand Maison. In: Structurae