Silberberg tunnel

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Silberberg tunnel
Silberberg tunnel
South portal (2017)
use Railway tunnel
traffic connection New Ebensfeld – Erfurt line
place Großbreitenbach
length 7407.4 mdep1
Number of tubes 1
Largest coverage 120 m
construction
Client Deutsche Bahn
building-costs approx. 200 million euros
start of building 2009
completion 2014 (shell)
North portal
Tunnel-Silberberg-Nordportal-2018-04.jpg
location
Silberberg Tunnel (Thuringia)
Red pog.svg
Red pog.svg
Coordinates
North portal 50 ° 37 ′ 38 "  N , 10 ° 58 ′ 59"  E
South portal 50 ° 33 ′ 41 ″  N , 10 ° 59 ′ 41 ″  E

The Silberberg tunnel is a single-tube railway tunnel on the new Ebensfeld – Erfurt line near Großbreitenbach . With a length of 7407.4 m ( kilometers 140.114 to 147.521) according to the planning approval decision , it is the second longest tunnel on the route after the Bleßberg tunnel. The tunnel is also one of the 10 longest railway tunnels in Germany .

The construction of the tunnel was awarded on March 26, 2009 for an order value of more than 200 million euros. In May 2009, three of the four ARGE partners were also awarded the contract to carry out the neighboring construction lot with the subsequent Brandkopf and Lohmeberg tunnels, including the Wohlrosetal and Schobsetal bridges in between.

The structure crosses under the town of Großbreitenbach and the protected Upper Möhrenbachtal.

In addition to the Bleßberg tunnel, the structure was considered to determine the construction period for the new line.

history

planning

The planned length of the structure was given in 1999 as 7391 m. The plan approval was already available at this point in time.

As a measure against the tunnel bang , additional portal structures were built.

construction

The construction of the structure was put out to tender across Europe in May 2008 and should take place between May 2009 and September 2012. Deutsche Bahn and the construction company offering the product did not initially agree on the price (as of July 2008). The building was finally awarded on March 26, 2009. Construction work started in June 2009. The start of construction was celebrated on September 11, 2009.

First, two intermediate access tunnels were created at Möhrenbach and Altenfeld . These will later serve as emergency exits. The first, 752 m long, tunnel (between Großbreitenbach and Altenfeld) was ceremoniously pierced on September 11, 2009. The tunnel sponsorship was taken over by Dagmar Schipanski , the then President of the Thuringian Parliament . On April 8, 2010, the drive for the tunnel was ceremoniously started in the Möhrenbach gallery. At this point in time, 140 meters had been driven to the south and 80 to the north. From 2010, only about 50 meters of each of the two portals should be excavated.

1.5 million cubic meters of material were mined with 1,500 tons of explosives. The excavated material was in two landfills at nearby Ilmsenberg ( 50 ° 35 '47 "  N , 10 ° 58' 50"  O ) and on a hill on Reischeltal ( 50 ° 34 '30 "  N , 10 ° 58' 59"  O ) built-in. The Reischeltal landfill alone covers an area of ​​18.6 hectares and is designed for 1.1 million m³ of excavated material. With the eruption, landscape models were created that were afforested or designed with forest mantle and perennial vegetation as well as hay mulch crops. The dissolved material was transported in the north via the L 1047 to the Ilmsenberg landfill 1.7 kilometers away. After the transport was completed, the road was given a new surface in summer 2013.

The tee lengths were between 1.3 and 2.2 meters. At the end of July 2010, they had driven 730 meters to the south and 570 meters to the north. In the fall of 2010, the construction work was underway below Großbreitenbach. The excavation work was delayed as a result of unexpectedly strong water inflows. In the night from April 2nd to 3rd, there was a strong water ingress in the NA2 face in the middle with inflows of up to 35 l / s. The north portal was reached in April 2011 and the south portal at the end of June.

North portal with openings to avoid the tunnel bang (2017)

The breakthrough between the north and south heading planned for the end of August 2011 was delayed because over a long stretch of the route no solid rock, but rather crumbly material interspersed with sand and clay was encountered. For months, the average advance was only ten or eleven meters a week. In order to minimize the delay, the drive from the north side was longer than originally planned. The technical breakthrough was after a drive of 2205 meters from the northern intermediate attack near Möhrenbach to the south and 1971 meters from the southern intermediate attack near Altenfeld to the north on November 7, 2011. The breakthrough celebration followed on November 29, 2011.

The inner tunnel shell was made with one formwork carriage from the south portal and with two formwork carriage from the north portal. It took a year and a half to make. The last concreting was celebrated on April 24, 2013. A total of 135,000 cubic meters of concrete and 11,000 tons of reinforcing steel were used.

Due to the increased access of water, the inner shell is to be expanded to maintain pressurized water over a length of 4.5 km instead of the previously planned 1.5 km. The shell should be completed in October 2013 after a construction period of 41 months.

The coverage of the tube is up to 120 m. When driving under the town of Großbreitenbach, at a depth of around 60 m, there was a night blasting ban. In spring 2011, the groundwater level in Großbreitenbach had dropped by 50 m. Deutsche Bahn denied any connection with the tunnel construction work.

The useful cross-section of the tunnel is 92 square meters, the excavated cross-section around 130 m². The tunnel crosses, among other things, the rock forms of quartzite slate , clay, sandstones and volcanic rocks .

Construction roads with a total length of 20 km had been built by July 2007.

South portal, in front of it diesel locomotive and work car for overhead line work

For work on the overhead line, a small diesel locomotive and a work car with low loaders were transported from the Coburg freight yard to the Silberberg tunnel at the beginning of October 2015 , which was not yet connected to the rail network.

During construction, which was GSM-R - base station Silberberg mid damaged and was replaced.

Construction accident

In the late evening of February 26, 2016, two trains with construction equipment collided during shunting work. A diesel tank on a trailer slipped and seriously injured a 54-year-old worker. He died shortly after in the hospital.

Installation

On November 4, 2017, the last of twelve rescue exercises held along the route before commissioning took place in the Silberberg tunnel.

A weather station was also set up at the south portal.

Rescue concept

The structure has eight emergency exits at a maximum distance of 1000 m, which are separated from the tunnel by fire-retardant and smoke-proof locks. The slab track and the tunnels are passable for road vehicles. There are turning points in the tunnel every 100 m. A continuous extinguishing water pipe is available. Emergency exit 1 is connected to emergency exit 2 at route km 141.124 with a 494 m long parallel gallery west of the driving tunnel to emergency exit 2 at route km 141.618, where a 752 m long window gallery leads to the outside in the direction of Reischeltal. Emergency exit 3 branches off from the tunnel below the Großbreitenbacher Glaswerk settlement on the eastern side at route kilometers 142.618 and is accessed with a 539 m long window gallery in the direction of Wiegandsmühle am Grundsbach . Emergency exit 4 at route kilometers 143.618, emergency exit 5 at route kilometers 144.343 and emergency exit 6 at route kilometers 145.068 are connected to emergency exit 7.1 at route km 145.798 via a 2180 m long parallel gallery east of the tunnel, where a 344.5 m long window gallery in one former quarry leads outside. The emergency exit 7.2 to the north at route kilometers 145.868 is also connected to the window gallery with a 70 m long, accessible parallel tunnel. Emergency exit 8 at route kilometers 146.868 consists of a shaft structure with a diameter of around nine meters, which is connected to the tunnel via an approximately 22 m long gallery and leads to the surface west of Möhrenbach in the Grubern valley. As an additional access to the north portal, the Wohlrosetalbrücke is accessible for rescue vehicles.

As part of the eighth plan change in 2015, the additional emergency exit 7.2 was subsequently built. In addition, a ventilation shaft with a height of around 120 m and an outside diameter of around 2.6 m was constructed in 2017 at emergency exit 4 for safety reasons to ventilate the passable rescue tunnels.

The Ilm district complained against the security concept because it considered the rescue area at the emergency exit near Möhrenbach to be too small. The Federal Railway Authority points out that in the event of an emergency, the adjacent state road could be closed. On February 28, 2019, the Federal Administrative Court decided on a lawsuit from the State of Thuringia and the district of Sonneberg on the size of various rescue areas along the route. At a rescue site in the Bleßberg tunnel, the court upheld the plaintiffs, u. a. in relation to the Silberberg tunnel, however, the action was dismissed.

gallery

Web links

Commons : Tunnel Silberberg  - Collection of images, videos and audio files

supporting documents

  • 5 meters per day advance on the ICE Silberberg tunnel in Thüringer Allgemeine on February 14, 2007
  • Orders for ICE tunnels in Silberberg in Thüringer Allgemeine from December 13, 2006

Individual evidence

  1. ↑ a b c d e f g h i j k Schüßler map: Route brochure for the new VDE 8.1 line from Breitengüßbach to Erfurt. Published by DB Netz AG Regional Area Southeast. As of June 1, 2017. p. 162  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Dead Link / fahrweg.dbnetze.com  
  2. ↑ Thuringian state administration: PFV for the DB Netz AG construction project: German Unity Transport Project (VDE) 8.1, new line (NBS) Ebensfeld - Erfurt, plan approval section (PFA) 2.2 "Ilmenau", construction km 56.4 + 15 - 76.1 +50 on the route (5919) Elterdorf - Erfurt - Leipzig Hbf, 8th change of plan . New line Ebensfeld-Erfurt * PA 3 * BA 2.2 Ilmenau, map km 60.1 + 74 - 63.0 + 83, Annex No. 1, Sheet 2, June 15, 2015
  3. ↑ a b Deutsche Bahn: Main drive for the second longest tunnel on the new railway line Ebensfeld-Erfurt started . Press release from April 8, 2010
  4. ↑ Silberberg Tunnel costs 200 million euros . In: Südthüringer Zeitung, March 26, 2009.
  5. ^ A b c Deutsche Bahn AG: Silberberg tunnel on the new Ebensfeld – Erfurt line before construction begins . Press release from March 26, 2009
  6. ↑ a b Large order for 10 kilometers of tunnel construction . In: Mbquadrat - The magazine for partners of the Max Bögl Group , Autumn 2009 edition, p. 27.
  7. ↑ 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. 10.
  8. ↑ German Bundestag: The Federal Government's response to the minor question from MPs Dr. Anton Hofreiter, Bettina Herlitzius, Winfried Hermann, other MPs and the Alliance 90 / THE GREENS parliamentary group (PDF; 74 kB). Printed paper 16/13787 of July 14, 2009
  9. ↑ Heinz-Dietrich Könnings, Max John: Construction of the longest railway tunnel in Germany for the NBS between Erfurt and Munich . In: Tunnel technology for future tasks in Europe . Balekma-Verlag, Rotterdam 1999, ISBN 90-5809-051-5 , pp. 83-95.
  10. ↑ German Bundestag: The Federal Government's response to the minor question from MPs Dr. Anton Hofreiter, Dr. Valerie Wilms, Sven-Christian Kindler, other MPs and the parliamentary group ALLIANCE 90 / THE GREENS (PDF; 89 kB) Printed matter 17/8213 - Cost increases in ongoing rail requirement plans. Printed matter 17/8287 of November 30, 2011.
  11. ^ D-Erfurt: tunnel construction work. 2008 / S 89-121375 Tender documents in the electronic Official Journal of the European Union from May 5, 2008
  12. ↑ The landscape will no longer be the same ( Memento from January 31, 2009 in the Internet Archive ). In: Free Word , July 16, 2008
  13. ↑ Without a source
  14. ↑ Start of construction for Silberberg tunnel on ICE route . Südthüringer Zeitung , September 11, 2009.
  15. ↑ a b Friedrich List: The “Unfinished” is still being built. In: Eisenbahn-Kurier , No. 11, 2008, pp. 40–45
  16. ↑ Deutsche Bahn AG: Opening ceremony for the second longest tunnel on the new railway line Ebensfeld-Erfurt . Press release from September 11, 2009
  17. ↑ a b Main tube of the second longest ICE tunnel drilled . In: Thüringer Allgemeine , April 9, 2010
  18. ↑ Planning approval decision, June 20, 1996
  19. ^ A b Last tunnel concreting in the Silberberg tunnel of the Nuremberg-Berlin project (VDE8). (No longer available online.) Deutsche Bahn AG, April 24, 2013, formerly in the original ; Retrieved April 26, 2013 .  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Toter Link / www.newscomm.de  
  20. ↑ First cracks discovered in houses near the ICE tunnel . In: Free Word , July 30, 2010
  21. ↑ Explosions and spooks in the tunnel under the skyscraper ( memento from October 24, 2010 in the Internet Archive ). In: Free Word , October 21, 2010.
  22. ↑ Water ingress during blasting for ICE Silberberg tunnel . In: Thüringer Allgemeine , February 19, 2011.
  23. ^ Gerd Schmidl: residue in the Silberberg tunnel . thueringer-allgemeine.de, August 28, 2011.
  24. ^ Deutsche Bahn AG (ed.): Second longest tunnel of the Nuremberg-Berlin project struck through the Thuringian Silberberg . Press release from November 29, 2011.
  25. ^ Möhrenbach: Tunnel work on the Silberberg . In: Thüringer Allgemeine , April 4, 2012.
  26. ↑ The groundwater level below Großbreitenbach has dropped significantly . In: Thüringer Allgemeine , May 2, 2011.
  27. ^ Deutsche Bahn AG (Ed.): Information on the Silberberg tunnel near Großbreitenbach . Press release from May 25, 2011.
  28. ↑ A dozen construction sites for the ICE . In: Free Word of July 17, 2007
  29. ^ Neue Presse Coburg, October 7, 2015
  30. ^ Germany-Frankfurt am Main: construction work for railway lines. Document 2018 / S 038-083783. In: Supplement to the Electronic Official Journal of the European Union . February 23, 2018, accessed February 23, 2018 .
  31. ^ Insuedthueringen.de: Accident on ICE construction site - worker dies, February 27, 2016
  32. ↑ ICE route shortly before trial operation . In: Thuringian General . July 31, 2017, p. 6 .
  33. ↑ Tunnel breakthrough for the ICE route on the Silberberg . Newstix message dated November 29, 2011, accessed December 20, 2011.
  34. ↑ Mammoth project on the home stretch . In: New Press . December 9, 2016, p. 15 ( online ).
  35. ↑ Thuringian state administration: PFV for the DB Netz AG construction project: German Unity Transport Project (VDE) 8.1, new line (NBS) Ebensfeld - Erfurt, plan approval section (PFA) 2.2 "Ilmenau", construction km 56.4 + 15 - 76.1 +50 on the route (5919) Elterdorf - Erfurt - Leipzig Hbf, 8th change of plan . Expansion of rescue areas, access roads Explanatory report Annex 0.1, July 6, 2015
  36. ↑ Districts complain about a lack of safety on the ICE route. MDR Thuringia, May 25, 2018, accessed on July 3, 2018 .
  37. ↑ Jörg Aberger, Alexander Schierholz, Steffen Höhne: Rescue place too small. Rail has to improve the tunnel on the new ICE route. In: mz-web.de. March 1, 2019, accessed April 13, 2019 .

Remarks

  1. ↑ a b Due to the additional portal structures, the tunnel length has increased from 7391 m to 7407 m. At the portal sign (south portal) there are still 7391 m indicated.
  2. ↑ a b The Wayss & Freytag Ingenieurbau AG area south gives a gross construction sum of around 264 million euros. Archived copy ( memento of the original from April 17, 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. @1@ 2Template: Webachiv / IABot / www.wf-ingbau.de