Großsee (Zirknitz)

Großsee
Großsee
Location: Carinthia , Austria Tributaries: Zirknitz
Carinthia , Austria
Coordinates	47 ° 1 '6 "  N , 12 ° 59' 1"  E Coordinates: 47 ° 1 '6 "  N , 12 ° 59' 1"  E
Data on the structure
Lock type:	Rock embankment dam
Construction time:	1972-1974 and 1978-1980
Height above foundation level :	49 m
Building volume:	740 000  m³
Crown length:	425 m
Operator:	Kelag
Data on the reservoir
Altitude (at congestion destination )	2417  m above sea level A.
Water surface	37 ha
Storage space	14.40 hm³
Catchment area	12.3 km²

The Großsee is a reservoir with a storage target of 2,417  m above sea level. A. , which is located within the Goldberg Group in the community of Großkirchheim . It has a storage volume of 14.40 hm³ and is located in the catchment area of ​​the Zirknitz . The Großsee is connected by a 1.6 km long pressure tunnel to the Hochwurtenspeicher reservoir in the neighboring Fragant , which is roughly the same size and at the same height . This allows the water level of the two reservoirs to be equalized according to the principle of communicating tubes .

The originally natural Karsee ( 2384  m ) was enlarged from 1972 to 1974 through the construction of a rock embankment with a surface seal made of asphalt concrete and a 367 m long crown. At that time he had a storage target of 2405  m above sea level. A. and a usable volume of 10.1 hm³. In the course of a second expansion phase from 1978 to 1980, the dam was increased by 12 meters, the crown was thereby lengthened to 425 m. In the Kelag Fragant power plant group, the Großsee serves as the annual storage facility for the Zirknitz (32 MW), Innerfragant (Wurten stage, 66 MW) and extra-questioning (96 MW) storage power plants .

literature

• Statistics 1977 of the large dams and river dams in Austria (=  The dams of Austria . No. 24 ). Austrian Reservoir Commission, Austrian Water Management Association, Austrian National Committee for Dams, Vienna 1977, ISBN 0-387-81461-2 , p. 170-173 .

• Feldsee pumped storage power plant: the art of building a power plant . KELAG-Kärntner Elektrizitäts-Aktiengesellschaft , Klagenfurt am Wörthersee 2014, ISBN 978-3-200-03554-6 , p. 31-39 .

Web links

Commons : Großsee  - collection of images, videos and audio files