Reitersberg tunnel
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Reitersberg tunnel Reitersberg tunnel
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 North portal 2017
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| use | Railway tunnel |
| traffic connection | High-speed line from Nuremberg to Erfurt (two-track) |
| place | Roedental |
| length | 2975 m |
| Number of tubes | 1 |
| cross-section | 92 m² |
| Largest coverage | 90 m |
| construction | |
| start of building | 2009 |
| completion | 2013 |
| map | |
 South portal 2017
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| Coordinates | |
| South portal | 50 ° 18 ′ 46 ″ N , 11 ° 0 ′ 22 ″ E |
| North portal | 50 ° 20 ′ 20 " N , 11 ° 0 ′ 44" E |
Map with all coordinates: The tunnel Reitersberg (also Reitersberg tunnel ) is a 2,975 m long railway - tunnel of Nuremberg-Erfurt high-speed railway in Rödental between the route kilometers 111.693 and 114.668.
The tunnel is the centerpiece of a 5.6 km section, which also includes cuts, a railway overpass structure and two road bridges over the route. A consortium of several medium-sized companies was commissioned to carry out the shell construction . The planned investment total for the section from construction kilometers 27.470 to 32.267 was 147 million euros . The tunnel accounts for around 100 million euros of this.
course
The south portal is near Oberwohlsbach , the north portal near Fornbach , both districts of the Upper Franconian town of Rödental in the Coburg district . The tunnel crosses under the 508 meter high Hohe Schwenge in the south and the 457 meter high Reitersberg in the north. The tunnel covers a maximum of 90 meters. Layers of keuper and shell limestone are traversed.
There is an incision at the north portal and the 150 meter long Fornbachtal bridge at the south portal.
The gradient of the tunnel rises towards Erfurt for the most part by 1.25%. Emergency exit 1 at km 112.668 is connected to the rescue area via a passable rescue tunnel. Emergency exit 2 at kilometer 113.668 has an accessible rescue tunnel.
history
planning
In the route planning in 1995 and 1996, a structure with a length of 2975 m was planned.
The construction of the 4.8 km long section with the tunnel was put out to tender across Europe in May 2008. The construction contract offered, which also includes the construction of the tunnel, should run from December 1, 2008 to February 26, 2013.
construction
The excavation was preceded by an exploration of numerous cavities in the limestone. The construction work began in the second half of March 2009, the drive on the south portal in July and on the north portal in early September. The planned construction time was four years.
In the first construction phase, the pre-cuts were made in front of the tunnel portals. In order to ensure the stability of the embankments up to a maximum of 20 m deep and 1: 1.8 steep embankments, slope dowelling measures had to be carried out using large multi-row bored piles with a diameter of 1.5 m. The more than 350 and up to 28 m long piles were constructed with two BG 40 rotary drilling rigs .
The tunnel was officially 17 August 2009 struck . Katja Hessel , State Secretary in the Bavarian Ministry of Transport was one of the guests . The tunnel sponsorship took Marga Beckstein .
The drive was carried out from both tunnel portals, one third from Fornbach. In August 2010 a 300 m long cross tunnel, which will later serve as a rescue access, was completed. At the end of November 2010, the north drive was provisionally completed after 1009 m.
A so-called base bridge was used to build the inner shell of the tunnel. The almost 100 m long steel construction spanned a section where the lower invert shell was made and thus enabled the simultaneous tunneling operation with vehicles. The shell was made in sections of 12.5 m in length with 120 t reinforcing steel each . This was done from the south portal.
In the course of the construction work, 526,000 m³ of material were excavated and heaped up in the south, on a landfill mountain "Pilgershöhe" ( 50 ° 18 ′ 27 ″ N , 11 ° 0 ′ 21 ″ E ) near Unterwohlsbach . This grew by 60 m in the course of the construction work. In the north, part of the excavation was installed during the construction of the railway embankment in front of and behind the Pöpelholz viaduct ( 50 ° 21 ′ 4 ″ N , 11 ° 1 ′ 8 ″ E ).
In the spring of 2011, when driving the tunnel in the area of a geological fault, the Eisfeld-Kulmbach fault zone, in a depression with little overburden, the tunnel ridge collapsed. At the end of June 2011, after the final 1275 m north and 1700 m south drive, the tunnel breakthrough followed, which was officially celebrated on July 21, 2011.
According to DB information, the breakthrough took place around six months before the planned date.
A rescue drill took place in the tunnel on March 11, 2017.
gallery
Rotary drilling rig BG 40 in front of the north portal, July 2009
North portal with sole bridge,
March 2012
South portal,
August 2009
Emergency exit south,
2019
50 ° 19 ′ 6 ″ N , 11 ° 0 ′ 23 ″ E
Emergency exit north,
August 2013
50 ° 19 ′ 53.5 ″ N , 11 ° 0 ′ 25 ″ E
literature
Web links
- Pictures of the construction site on bastellen-doku.info
- Reitersberg tunnel on vde8.de
Individual evidence
- ↑ Schüßler plan: Route brochure for the new VDE 8.1 line from Breitengüßbach to Erfurt . In: DB Netz AG; Regional area southeast . As of June 1, 2017. p. 150 ( page no longer available , search in web archives )
- ↑ a b c DB Mobility Logistics AG (Ed.): Opening ceremony for the first tunnel on the new railway line Ebensfeld-Erfurt in Bavaria . Press release from August 17, 2009.
- ↑ a b c For four years, says, "Good luck!" . In: Neue Presse Coburg, March 5, 2009
- ↑ a b c d Deutsche Bahn AG (Ed.): Breakthrough of the Reitersberg tunnel in the Nuremberg – Berlin railway infrastructure project . Press release from July 21, 2011.
- ↑ In the "blasting drive" through the Lauterberg . In: Neue Presse Coburg , December 24, 2008
- ^ A b Planungsgesellschaft Bahnbau Deutsche Einheit mbH: ABS / NBS Nürnberg-Erfurt-Leipzig / Halle-Berlin. Section Ebensfeld-Erfurt on the new line from January 1995 (PDF, 15 pages, 2.1 MB), p. 11
- ↑ Planungsgesellschaft Bahnbau Deutsche Einheit mbH (ed.): A new railway for Thuringia, Germany and Europe. The new railway line from Ebensfeld to Erfurt . Erfurt, April 1996, p. 12.
- ^ D-Erfurt: Construction work for bridges, tunnels, shafts and underpasses. 2008 / S 98-132448. . Tender documents in the Electronic Official Journal of the European Union as of May 22, 2008
- ↑ witt & partner geoprojekt: NBS Ebensfeld-Erfurt, BA 3122, earthworks VP Rödental: EBA examination
- ^ Coburger Tageblatt, November 26, 2010.
- ^ Coburger Tageblatt, 5./6. February 2011, p. 17
- ↑ Coburger Tageblatt, January 27, 2012, p. 17
- ↑ Coburger Tageblatt, March 13, 2017