Ville studs
The Ville tunnel is a drainage tunnel that extends from Götzenkirchen under the Ville to Frechen-Königsdorf . The tunnel is used to drain water from the Erft into the Cologne Rand Canal and thus into the Rhine during floods . It is an artificial tube with a length of six kilometers and a cross-sectional area of nine square meters.
history
The Ville-tunnel was built to the in Sümpfung of lignite - opencast mining in the Rhenish mining area resulting to include in addition to the Erft led water and dissipate. Although a large part of the water that is pumped into the Erft at Kenten is used, floods often occur in the lower reaches of the Erft, especially after heavy rainfall and during the melting of the snow, which would be intensified by additional water. Today, around 550 million cubic meters of water are pumped into the Erft from the opencast mines, especially the Hambach opencast mine . It is used as cooling water in RWE Power's power plants along the Erft, for irrigation of the wetlands in the Schwalm-Nettetal and for the production of drinking water.
The planning for the Ville adit as an additional outflow for the Erft began in the early 1950s. As a solution, a second route from the Erft to the Rhine was proposed via the Cologne Rand Canal, which was built between 1954 and 1955, but for which a tunnel had to be driven through the Villerücken, which lies between the Erft and the Rhine Valley. The tunnel was driven by the then operator of the opencast mine, the Rheinbraun company , between Götzenkirchen as far as Neu-Buschbell , with more than 100 workers working in parallel from five shafts over a period of two years. "With the Horrem-Götzenkirchen pumping station, larger amounts of water could be channeled from the Erft into the edge canal. As a result, it was only possible at all to discharge the water masses from the drainage of Tgb. Fortuna-Garsdorf via the Erft -Garsdorf pumped more than 15,940 million m³ of groundwater here. "
A tee and a canal to Götzenkirchen were built on the Erft itself near Kerpen , so that the water can flow off directly to Götzenkirchen during floods. A pumping station was set up at the end of the canal to pump the incoming water into the tunnel that begins 10 meters higher. The pumping station with an output of up to 8.5 cubic meters of water per second was able to start operation in 1957. The water then flows through the tunnel to Neu-Buschbell into the Cologne Rand Canal in the direction of Worringen and then into the Rhine.
Current
In 2010, the Ville tunnel and the entire system were examined for damage, the pumps and the electrics of the pumping systems should be replaced, whereby the costs were estimated at a double-digit million amount. According to a landscape plan of the Office for Environmental Protection and District Planning of the Rhein-Erft District, it should be checked whether "the drainage canals running between Mödrath Castle and Götzenkirchen (southern supply line to the Cologne Rand Canal) of Rheinbraun AG, the drainage of marsh waters and Erft floods to Götzenkirchen pumping station serve, eliminated and the natural state of the terrain restored. " It is assumed that this "should be possible by the Erftverband at the latest when the flood retention basin in the recultivated Frechen opencast mine is put into operation ".
Individual evidence
- ↑ a b c d Norbert Kurth: A shortcut to the Rhine. ( Memento of the original from June 25, 2010 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. Kölner Stadtanzeiger June 20, 2010
- ↑ Ministry for Environment and Nature Conservation, Agriculture and Consumer Protection NRW: Results report Erft: Water Framework Directive in NRW - inventory. Chapter 3.1.4. Withdrawals and transfers of surface water.
- ↑ District forum Oberaußem: 7. The Fortuna opencast mine - Garsdorf. ( Memento of the original from June 30, 2013 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. In: Oberaussem - Fortuna and brown coal. Homepage of the district forum Oberaußem.
- ^ A b Office for environmental protection and district planning Rhein-Erft-Kreis, The district administrator: Landscape plan 5, Erfttal Süd, 5th amendment. ( Memento of the original from March 5, 2016 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; 836 kB)
Coordinates: 50 ° 54 ′ 16.4 " N , 6 ° 43 ′ 2.1" E