Zierenberg tunnel
| New Zierenberg tunnel | ||||
|---|---|---|---|---|
 Southwest portal of the new Zierenberg tunnel (under construction);
View from a 628 of the Kurhessenbahn (2016) |
||||
| use | Railway tunnel | |||
| traffic connection | Volkmarsen – Vellmar-Obervellmar railway line | |||
| place | between Zierenberg and Fürstenwald ; District of Kassel , Hessen ( Germany ) | |||
| length | 900 m | |||
| Number of tubes | 1 (single track) | |||
| construction | ||||
| start of building | 2015 | |||
| completion | 2018 | |||
| location | ||||
|
||||
| Coordinates | ||||
| Southwest portal | 51 ° 22 ′ 20 " N , 9 ° 19 ′ 27" E | |||
| Northeast portal | 51 ° 22 ′ 37 " N , 9 ° 20 ′ 5" E | |||
Map with all coordinates: | Old Zierenberg tunnel | |
|---|---|
 Southwest portal of the old Zierenberg tunnel (2007)
|
|
| use | Railway tunnel |
| traffic connection | Volkmarsen – Vellmar-Obervellmar railway line |
| place | between Zierenberg and Fürstenwald ; District of Kassel , Hessen ( Germany ) |
| length | 815.5 m |
| Number of tubes | 1 (single track) |
| construction | |
| completion | 1896 |
| business | |
| release | 1897 |
| closure | 2018 |
| Coordinates | |
| Southwest portal | 51 ° 22 ′ 21 ″ N , 9 ° 19 ′ 29 ″ E |
| Northeast portal | 51 ° 22 ′ 36 " N , 9 ° 20 ′ 5" E |
The Zierenberg Tunnel is a 900 m long single-track railway tunnel on the Volkmarsen – Vellmar-Obervellmar line that was completed on October 11, 2018 . It is located in the Habichtswälder Bergland between Zierenberg and Fürstenwald in the northern Hessian district of Kassel .
The tunnel is the successor to the 815.5 m long, single-track tunnel of the same name that was completed in 1896 and closed in 2018. This parallel tunnel is to be filled in 2019.
Geographical location
The Zierenberg Tunnel is located in the Habichtswald Nature Park between the Zierenberg core town in the west-southwest and the village of Fürstenwald in the east-northeast, which belongs to the municipality of Calden . It leads between the Großer Schreckenberg ( 460 m above sea level ) in the west-northwest, the Kleiner Schreckenberg ( 474.7 m ) in the northwest and the Kleiner Dörnberg ( 481.6 m ) to the south , a north-western foothill of the Hohe Dörnberg ( 578.7 m) ), under the mountain pass on Galgenberg . The pass is part of the watershed between the warmth in the west and its tributary Nebelbeeke in the east.
About the middle of the tunnel on the mountain pass ( 363.2 m ) on the Galgenberg at the highest point of the state road 3214, which connects Zierenberg in the south-west with Ehrsten (part of the municipality of Calden) in the north-east, the county road 97, which leads to the Dörnberg heights, branches off.
geology
The old and new Zierenberg tunnels lead through layers of the Röt Formation : Both run mainly through clay stones and in the middle part through clay stones and plaster layers . These red layers are covered by a thin layer of yellow limestone and a thicker layer of shell limestone .
New Zierenberg tunnel
In the north, Deutsche Bahn built the 900 m long New Zierenberger Tunnel , which was built closely parallel to the old tunnel. According to the original plans, it was to open in 2013 and was to be 937 m long. After the preparatory work was tendered across Europe by the Kurhessenbahn in early February 2014 , the tunneling began in October 2015. On May 20, 2016 has been punctured .
The new tunnel is 13 to 20 m north of the old tunnel. The ridge cover, i.e. the distance between the tunnel and the top of the terrain of the mountain pass on the Galgenberg , reaches a maximum of around 60 m. The south-west portal is located at about 25.7 km at an altitude of 300 m and the north-east portal at about 26.6 m at 310.8 m .
At the south-west portal, a bored pile wall with 43 bored piles with a maximum length of 17 m was constructed a few meters below the L 3214, which was closed for eight weeks, to intercept a part of the slope of the Schreckenberg and to create a stop wall there . The wall is anchored back into the subsoil with a maximum of 22 m long rock anchors with a diameter of up to 63.5 mm.
At the north-east portal, a bored pile wall with 121 bored piles with a maximum length of 18 m and above it a 10 m high embankment was built to support another part of the slope. The wall is anchored back into the subsoil with a maximum of 25 m long rock anchors with a diameter of up to 63.5 mm.
The tunneling found within its mined pre driven part which is 871 m long, in southwest-northeast direction instead; the remaining 65 m construction section on both sides of the tunnel portal was carried out using the cut-and-cover method . The rock material was loosened “slice by slice” in sections of about 1 m. The excavated material, of which a total of around 114,000 m³, was excavated on the one hand with tunnel excavators and on the other hand, solid rock was blasted. Because of the old tunnel running parallel, the blasting had to be carried out with "extremely low vibration". Meanwhile, the railway line had to be closed in scheduled train breaks and then the old tunnel had to be walked through and checked for damage. Pneumatic loaders and dump trucks were used to load and move the excavated material; a total of around 10,000 truck trips were necessary for this . The rock material located directly around the newly created tunnel was secured with rock bolts and shotcrete , for which purpose truck mixers , mobile sprayers and jacking drills were used.
In its final state, the new tunnel consists of two concrete shells: its outer shell made of shotcrete with rock bolts is 20 to 35 cm thick. The inner shell is made of waterproof reinforced concrete and is around 40 cm thick. The tunnel is 8.59 m high and 7.88 m wide. Its maximum gradient in the southwest-northeast direction is 12 ‰. There is an escape route 1.2 m wide and 2.25 m high, arranged in the single-tube tunnel.
The final work of the tunnel construction project included the construction of around 1.6 km of new single-track railway line without overhead lines on both sides of the tunnel and within it.
The new tunnel was opened to visitors on December 5, 2016 and September 8, 2018 on the day of the open tunnel . From September 29 to October 10, 2018, the section from Zierenberg through Fürstenwald to Weimar was closed in order to swivel the track from the previous to the new tunnel; During this period, buses ran between Zierenberg and Weimar in the rail replacement service (SEV). The first train drove through the tunnel on October 11, 2018.
After the commissioning of the new tunnel, the remaining work, including the dismantling of the construction site equipment areas and the construction roads as well as the construction of rescue areas, should last until 2019 [obsolete] .
Initially, the total contract value for the tunnel construction project was € 21,497,058 . It ended up costing around EUR 42 million.
Old Zierenberg tunnel
According to the inscription on both tunnel portals, the old Zierenberg tunnel was completed in 1896 and was in operation from 1897 to 2018. The 815.5 m long structure had only one tube and one track.
The south-west portal is located at about 25.7 km from the railway line, and the north-east portal at about 26.5 km from the railway line.
Because the state of the structure had many defects and damage and renovation was not profitable, the old tunnel was replaced by a new structure running parallel to it, which went into operation in 2018. After the track has been dismantled, it will be filled with usable excavated material from the new tunnel in 2019. The tunnel portals are cultural monuments due to the Hessian Monument Protection Act and will be preserved. A bat quarter is to be created in the area of the top of the old tunnel .
literature
- db / schr: New Zierenberg tunnel opened . In: Eisenbahn-Revue International 1/2019, p. 2.
- State Office for Monument Preservation Hessen (Ed.): Railway in Hessen. Cultural monuments in Hessen. Monument topography Federal Republic of Germany , Theiss Verlag, Stuttgart 2005, 3 volumes in a slipcase, ISBN 3-8062-1917-6 , esp. Route no. 068 (Vol. 2.2, p. 778 ff)
References and comments
-
↑ a b c Length of the new Zierenberg tunnel :
- Inscription 900m on the signs of both tunnel portals
- Announcement - 1st plan change ... to the planning approval decision - for the "new construction of the Zierenberg tunnel and backfilling / partial backfilling of the old Zierenberg tunnel" , Kassel regional council, from January 2017 - ↑ a b c d e f g h i j k New construction of the Zierenberger Tunnel - project information, dated November 30, 2015, accessed on January 8, 2017, on bahn.de (PDF; 9.55 MB)
- ↑ a b c Drive freely in the new Zierenberg tunnel. Kurhessenbahn, accessed on December 20, 2018 .
- ↑ a b c d e f Information and photos about the Zierenberg tunnel , according to the details page for the Zierenberg tunnel, on eisenbahntunnel-portal.de
- ^ Services of architecture and engineering offices as well as planning- related services , Document 2013 / S 078-131679 of April 20, 2013 in the supplement to the electronic gazette of the European Union
- ↑ a b Zierenberger Tunnel u. a. with a rail route map , according to the start page for the Zierenberger Tunnel, on eisenbahntunnel-portal.de
- ↑ Tunneling at the New Zierenberg Tunnel has started ( memento from December 2, 2015 in the web archive archive.today ), Deutsche Bahn press release from October 22, 2015, accessed on December 2, 2015
- ↑ Germany-Frankfurt am Main: Construction work for bridges, tunnels, shafts and underpasses , Document 2014 / S 025-040076 of February 5, 2014 in the supplement to the electronic gazette of the European Union
-
↑ a b Tunnel of the Kurhessenbahn in Zierenberg is broken , accessed on August 13, 2016, on kurhessenbahn.de;
see also: → New tunnel of the Kurhessenbahn in Zierenberg broken through . In: Hessenschiene 104 (magazine; July – September 2016), pp. 7–8 - ↑ a b c New construction of the Zierenberger Tunnel , accessed on January 8, 2017, from bemo.net
- ^ New construction of the Zierenberg tunnel ( reason and objective of the construction measure , initial situation , construction measures and dates ; etc.), DB ProjektBau GmbH, from December 20, 2013, on zierenberg.org (PDF; 2.5 MB)
- ↑ Open Tunnel Day , accessed on September 20, 2018, from kurhessenbahn.de
- ↑ a b Monika Wüllner: Zierenberger Tunnel will be opened to visitors on September 8th. In: HNA. August 7, 2018, accessed November 12, 2018 .
- ↑ 29 September to 10 October: RB4: SEV Zierenberg <> Weimar , in construction sites, timetable changes and rail replacement services (SEV) , from September 11, 2018, accessed on September 20, 2018, on kurhessenbahn.de
- ↑ see literature - db / schr New Zierenberg tunnel opened .
- ↑ Railway track km 26.6 + 815.5 m tunnel length
Web links
- Information and photos about the Zierenberg tunnel , according to the details page for the Zierenberg tunnel, on eisenbahntunnel-portal.de
- New construction of the Zierenberg tunnel ( reason and goal of the construction measure , initial situation , construction measures and dates ; etc.), DB ProjektBau GmbH, from December 20, 2013, on zierenberg.org (PDF; 2.5 MB)