Inn Canal
The Innkanal is a 22.8 km long working channel for supplying the water power plant Toging which, when Jettenbacher weir from the Inn is derived north left and southeast of Toging opens into the river. The diversion section of the Inn is 31.5 kilometers long. The discharge of 340 cubic meters of penstock per second is approved until June 30, 2026. The amount of water remaining in the Inn fluctuates between 35 and 50 cubic meters per second.
Technical specifications
The upstream channel between the weir and the power station is 20 kilometers long, the downstream channel is 2.8 kilometers long. The cross-section is trapezoidal and the slopes have a constant slope of 40 degrees . After the 300 meter long and 125 meter wide cleaning basin at the beginning, the headwater canal has a water level of 52 m over a length of six kilometers. The next 14 kilometers the water level is 30 m at 8 m depth. As a result, an average flow speed of two m / s is achieved with little loss of gradient. Because of the acute danger to life associated with it, swimming in and driving on the canal is prohibited, with the exception of local rescue organizations such as DLRG , water rescue service , THW and fire brigade .
Accidents
The Inn Canal is occasionally used for suicides . In 2005 the rescue organizations went to nine so-called jump cases on the Inn Canal, in 2006 one, in 2007 none and in 2008 again two missions of this kind. Most of the people can no longer be rescued; again. Often only days later they drive at the moated castle . However, according to the local rescue organizations, animal rescue operations are increasing. With a continuous increase in the last few years, the rescue organizations go out 4–6 times a year for this type of operation. In about 33% of the cases, the animals can be saved. Most of the animals rescued are deer, but in 2007 two cows fell into the Inn Canal for the first time.
history
Construction of the canal
The canal was built between 1919 and 1922. At the time, Europe's largest construction site, between 4,000 and 7,000 workers worked and moved around 14 million m³ of earth and paved 360,000 m³ of concrete.
Renovations
In total, the sewer has been renovated three times so far. The first renovation took place in 1946 and served to repair war damage. The second renovation took place in 1986 and the third between May and September 2003.
During the last renovation, as with the first, the sewer was completely drained. The aim of this renovation was to reduce the flow resistance in the canal, to renew the sealing and to renovate the 19 bridges. Among other things, a specially developed concrete paver was used. Around 142,000 m³ of concrete were used for the renovation. When cleaning the area in the immediate vicinity of the power plant alone, around 45,000 m³ of sludge had to be removed. The recovery of a total of 28 car and 10 motorcycle wrecks, as well as numerous other objects, caused problems. The total cost of the construction project amounted to around 45 million euros.
Others
The operator of the canal was initially Innwerk AG , later Bayernwerk AG. The canal was then owned by E.ON Wasserkraft GmbH. The power plant, which was originally built for an aluminum plant, now has an annual output of 570 gigawatt hours . All 12 Inn power plants were sold to the Austrian electricity company Verbund in 2009, as the energy company E.ON was forced by the EU antitrust proceedings to sell 5,000 megawatts of power plant capacity and its transmission network.
Web links
Individual evidence
- ↑ Directory of creek and river areas in Bavaria - Inn river area, page 47 of the Bavarian State Office for the Environment, status 2016 (PDF; 2.8 MB)
- ↑ Innauen and Leitenwälder, Management Plan Part II - Technical principles for the FFH area. Government of Upper Bavaria, November 8, 2016, pp. 2, 34 , accessed on June 17, 2017 .
- ↑ a b c d Töging run-of-river power station. Verbund AG , accessed on June 17, 2017 .
- ↑ Klaus Felsch, Martin Erbinger: New concrete floors for environment-friendly power generation; Challenges in the repair of the Inn Canal . In: concrete information . tape 3 , 2006, p. 19–28 ( digitized version [PDF]).