Koblenz barrage

from Wikipedia, the free encyclopedia
Koblenz barrage
Barrage Koblenz with hydroelectric power station, the locks and the Moselle reservoir in the foreground

Barrage Koblenz with hydroelectric power station, the locks and the Moselle reservoir in the foreground

location
Barrage Koblenz (Rhineland-Palatinate)
Koblenz barrage
Coordinates 50 ° 22 '0 "  N , 7 ° 34' 57"  E Coordinates: 50 ° 22 '0 "  N , 7 ° 34' 57"  E
Country: Germany Rhineland-Palatinate
Rhineland-PalatinateRhineland-Palatinate 
Place: Koblenz
Waters: Moselle
Water kilometers : km 1.94
Data
Responsible WSA : WSA Koblenz
Start of operation: 1951 (lock 2)
1964 (lock 1)
lock
Type: Chamber lock
Category: Vb
Usable length: 172.10 (lock 1)
110.00 (lock 2) m
Usable width: 11.60 m
Height upstream : 65.05  m above sea level NN
Average
height of fall : 		4.95 m
Upper gate: Lifting sector
Lower gate: Miter gate
Others
Associated power plant: Moselle power station Koblenz

The Koblenz barrage is the last barrage on the Moselle before it flows into the Rhine in Koblenz . It is equipped with a roller weir , two locks for large motor cargo ships , a boat lock , a hydroelectric power station and a fish ladder . The entire facility crosses a steel walkway for pedestrians. The barrage at Moselle kilometer 1.94 was completed in 1951 and is therefore the oldest system in the course of the Moselle canalization .

history

The plans for the construction of the Koblenz barrage go back to drafts of the German government in the years 1938 to 1940 to make the Moselle navigable. The construction of the barrage began in 1941. Due to the chaos of war and the heavy air raids on Koblenz during World War II, the project had to be discontinued in 1944. From 1948 to 1951, the construction of the barrage was finally completed under the direction of the French occupying forces with a hydroelectric power station , a roller weir and a 110.00 x 11.60 m lock .

With the Moselle canalization in the years 1958 to 1964, the Moselle from Koblenz to Metz was made navigable and the Koblenz barrage could now fulfill its actual purpose. In addition to the existing one, a new lock with a usable size of 172.10 x 11.60 m was added.

The hydropower plant underwent a general overhaul in 1998. The weir footbridge had to be closed in 2009 due to damage. The footbridge has been completely renewed and has been available to pedestrians and cyclists again since December 21, 2010.

After the fish pass on the right bank of the Moselle no longer met the requirements, a new system was built between April 2010 and September 2011. At the same time, the Mosellum visitor and information center , which opened on September 29, 2011, was built.

In March 2015 it became known that the three-span roller weir of the barrage was severely damaged and had to be renovated. The work should start in April 2015 and be completed by 2017. The construction costs are estimated at 4 million euros. Due to delays due to constructional difficulties, the completion of the work is expected to be delayed in 2018.

Technical specifications

Barrage

The barrage is located at Moselle kilometer 1.94 at a height of 65.05 m above sea ​​level . The height of fall at mean water is 4.95 m. While the other Moselle barrages are equipped with sector weirs , the Koblenz barrage has a three-span roller weir , in the middle roller of which a fish-bellied flap is built to divert drift ice.

lock

There are three lock chambers in the barrage. The lock chamber 1 has a total length of 175.47 m and a width of 12 m, the lock 2 has a length of 122.50 m with the same width. This means that the barrage can be passed by large motor cargo ships up to a length of 110 m and push convoys up to a length of 172.10 m with a width of 11.45 m. There is also a smaller lock for pleasure craft .

Hydroelectric power plant

The run-of-river power plant with four Kaplan turbines can generate up to 16 megawatts of electrical power with a water volume of 380 m³ / s . This generates 62 million kWh of electrical energy a year, enough for 18,000 households. The operation of the hydropower plant is monitored by the central control room of RWE Power AG at Fankel .

gallery

  • General view of the system with weir and hydroelectric power station

  • Underwater side of the power plant

  • The two locks

  • The last Moselle bridges in Koblenz, the Koblenz barrage on the left

See also

Web links

Commons : Koblenz barrage  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b c d WSA Koblenz: Koblenz lock. (No longer available online.) Archived from the original ; Retrieved June 7, 2011 .
  2. ↑ a b WSA Koblenz: Koblenz lock system. (No longer available online.) Formerly in the original ; Retrieved June 7, 2011 .  ( Page no longer available , search in web archives )@1@ 2Template: Toter Link / www.wsv.de
  3. ^ Rhein-Zeitung : Weir footbridge over Moselle barrage closed for the time being. Retrieved March 25, 2009 .
  4. ↑ Mosellum (PDF; 6.9 MB) in: gfg-fortbildung.de
  5. ^ The Koblenz weir needs to be renovated in: Rhein-Zeitung , March 4, 2015
  6. ^ WSA Koblenz: Main data of the Moselle. (No longer available online.) Archived from the original ; Retrieved June 15, 2011 .