Helix tower fish pass
The Helix-Turmfischpass (also Mäander-Helix-Turmfischpass ) is a fish ladder in the form of a spiral staircase .
The first plant, which was built under the direction of the Bochum University of Applied Sciences, is located in Schwentinental ( Raisdorf district ) near Kiel and is part of the Rastorfer Mühle power plants . The structure is unique in the world. The slope of around three percent is overcome in Raisdorf over a length of 200 meters using 36 pools. The round shape of the step basin prevents possible injuries to the fish.
It was financed mainly from EU funds with around 550,000 euros. Construction began at the beginning of 2004, on April 27, 2005 the pass was flooded. The construction became known to a wider public because the first implementation was described by the taxpayers 'association and the Schleswig-Holstein State Nature Conservation Union as a waste of taxpayers' money.
The system was developed at the Bochum University of Applied Sciences . It should enable fishing where conventional fishways are hardly feasible to overcome the height difference at a dam. The architect Hans Wilhelm Peters designed and patented the meander fish pass.
According to the EU Water Framework Directive , dams in protected areas must be equipped with suitable fish passes by 2015. Another smaller system was later built at the mouth of the Schwentine in the port of Kiel.
Web links
- innovations-report.de, article about the Helix tower fish pass with pictures
- FH Bochum, information sheet on the tower fish pass (pdf, approx. 100 kB)
- Report in the 2005 Black Book of the Taxpayers Association (pdf, approx. 1.77 MB, pages 46–47)
Individual evidence
- ^ Research in the field of civil engineering - FB B - Bochum University. Retrieved April 27, 2017 .
- ↑ A staircase for fish: Bochum University of Applied Sciences presents its pilot project in the state parliament of North Rhine-Westphalia. Retrieved April 27, 2017 .
- ↑ Raisdorf-inside web design: Helix-Turmfischpass / Raisdorf hydroelectric power station. Retrieved April 27, 2017 .
- ↑ Report in the Black Book 2005 of the Federation of Taxpayers ( Memento of the original from September 24, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (pdf, approx. 1.77 MB, pages 46-47).
- ↑ Schilda sends his regards. Handelsblatt.de , article from September 27, 2005, 4:55 p.m.
- ↑ Patent 103 31 596 with sketches and pictures ( memento of the original from March 3, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. .
Coordinates: 54 ° 17 ′ 17 " N , 10 ° 14 ′ 53" E