Wehr 1 (Vienna)

Weir 1
	Weir 1 of the New Danube
use	Pedestrians , cyclists
Crossing of	New Danube
place	Vienna
construction	Prestressed concrete bridge
overall length	148 m
width	7.50 m
completion	1978
	location
Above sea level	157.65 m

48.211706 16.436974 157.65Coordinates: 48 ° 12 ′ 42 ″ N , 16 ° 26 ′ 13 ″ E

The weir 1 is a fortification in the New Danube in Vienna . It is located around the end of the Old Danube . It creates a connection to the Danube Island for pedestrians and cyclists . It was built from 1976 to 1978.

Building

Like the other two weirs on the New Danube, weir 1 serves to regulate the water level of the New Danube. It consists of five weir fields with a clear width of 25 meters. It is a rigid system, which means that, unlike the weir systems in power plants, it is normally not moved. The weir locks are hydraulically operated pressure segments with a fixed spill hood.

Weir 1 was founded on diaphragm walls in tertiary sands and tegels . A fault zone was found during the exploration boreholes, so that the weir axis had to be shifted.

Hydroelectric power plant

From summer 2016, an underground hydropower plant was built as a joint project between Wien Energie and MA 45 - Wiener Gewässer. With an average output of 45 kW, the needs of around 130 households are to be covered. The construction costs were around 1.8 million euros. Instead of the turbines used in conventional hydropower plants, a hydropower screw is used, which uses the height difference of around 3.5 meters and works on the principle of an Archimedean screw . The screw is 15 meters long with a diameter of 3.20 meters and moves at 25 revolutions per minute during operation. The power plant started operations in June 2017.

Web links

Commons : Wehr 1 (Vienna) - Collection of images, videos and audio files

literature

Franz Michlmayr: The weir systems in the New Danube , In: der aufbau 1983 / 6-7, Compress Verlag, pp. 264–265, ISSN 0004-7805

Individual evidence

↑ Philipp Wagner: Small hydroelectric power plant is being built on Danube Island . In: Kronen Zeitung from July 15, 2016
↑ Clean electricity from the New Danube for 130 households , archive report of the town hall correspondence from July 13, 2016, accessed on February 8, 2017.
↑ Wien Energie: Schnecke supplies clean electricity. APA OTS, June 9, 2017, accessed June 12, 2017 .

[1] Philipp Wagner: Small hydroelectric power plant is being built on Danube Island . In: Kronen Zeitung from July 15, 2016

[2] Clean electricity from the New Danube for 130 households , archive report of the town hall correspondence from July 13, 2016, accessed on February 8, 2017.

[3] Wien Energie: Schnecke supplies clean electricity. APA OTS, June 9, 2017, accessed June 12, 2017 .