Kriebergtunnel
| Kriebergtunnel | ||||
|---|---|---|---|---|
| traffic connection | SFS Hannover – Würzburg | |||
| length | 2994 m | |||
| Number of tubes | 1 | |||
| construction | ||||
| Client | German Federal Railroad | |||
| business | ||||
| operator | DB network | |||
| location | ||||
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| Coordinates | ||||
| North portal | 51 ° 47 ′ 51 ″ N , 9 ° 58 ′ 5 ″ E | |||
| South portal | 51 ° 46 ′ 15 ″ N , 9 ° 58 ′ 7 ″ E | |||
Map with all coordinates: The Kriebergtunnel is a 2,994 m long railway tunnel on the high-speed line Hanover – Würzburg ( route kilometers 69.5 to 72.5) in Lower Saxony . It crosses the Krieberg between the town of Ahlshausen and the village of Hohnstedt and therefore bears his name.
Location and course
The north portal is at route kilometers 69.465, north of the district road 649, northwest of Ahlshausen. The south portal at km 72.459 was built northeast of Hohnstedt .
The route lies in the area of the north portal in the direction of Göttingen in a slight left-hand curve and initially turns into a straight line before turning into a right-hand curve in the southern section of the tunnel. The gradient rises, towards the south, at the north portal initially slightly by 2.654 per thousand and a few hundred meters later turns into a gradient of 12.497 per thousand, which continues up to the south portal. In the vicinity of the south portal, while still in the tunnel, the route changes from a straight to a right-hand bend in a southerly direction.
The tunnel crosses layers of the red sandstone . Structurally difficult layers of the Quaternary, consisting of loess loam and silt sands, are passed through , in addition to that, Varkarst gypsum in the south .
To the north is an 880 m long and mean 14 m deep cut. After a short dam, a bridge and another dam, the Sohlberg tunnel follows from km 68.376 .
To the south, the tunnel is followed by a roughly 400 m long pre-cut, which merges into a 700 m long and up to 14 m deep cut. After an approximately 600 m long and up to 6 m high dam, the route crosses the federal highway 3 on a bridge, before reaching the parallel position with the Hanover Southern Railway after another dam (290 m long) .
history
planning
Due to geological difficulties - the planners feared that they would not be able to build the tube sufficiently stable over a zone of depleted gypsum keuper - the tube could not be extended to the south as planned. In the north (near Ahlshausen), however, the tube was extended by 300 m during the planning phase. This northern section, a total of 500 m long, was built using the open construction method .
The northern section runs flat under the site and (from km 70.800 northwards) belonged to the planning approval section 2.14 of the new line.
In 1982 the planned length of the structure was 2994 m.
construction
Construction work began in April 1984. The actual tunneling began in June 1984, increasing from south to north. Due to the low overburden, the northern 457 m of the tunnel were built using the cut-and-cover method. This was followed by a 504 m long section, which - due to geologically unfavorable conditions - was excavated with an elm tunnel, falling from north to south.
The inner shell was made 35 cm thick in the mining section, the wall thicknesses in the open section reach 60 to 80 cm. A total of 120,000 m³ of concrete and 8,800 t of steel were used. 390,000 m³ of material were excavated for the tube and 1,000,000 m³ were excavated for the pre- cuts.
680,000 m³ were deposited in a former depression on the edge of the municipality of Ahlshausen. The area was made available again for agriculture.
In February 1986 there was an eruption in the area of the elm tunnel . When the dome was pulled over the finished elm tunnel, the mountains collapsed over a length of 60 m.
Construction work ended in 1987. The contractors were Held & Francke Bau AG (Hamburg), Rella Bau GmbH (Vienna) and Innerebener & Meyer GmbH (Innsbruck).
The construction cost was 110 million Deutschmarks.
business
On the night of August 10, 2014, a rescue exercise took place in the Krieberg tunnel.
Web links
- Pictures of the tunnel portals on eisenbahn-tunnelportale.de
Individual evidence
- ↑ a b c d e f Deutsche Bundesbahn, Bundesbahndirektion Hannover, project group Hannover – Würzburg North of the railway construction center: Tunnel construction in the northern section of the new line Hannover – Würzburg , brochure (22 pages), status: January 1987, p. 15
- ↑ a b DB Netz AG tunnel. (PDF) DB Netz, August 2, 2018, accessed on September 2, 2018 .
- ↑ a b c DB project group Hanover-Würzburg (North) (ed.): Ahlshausen, Sievershausen , brochure (12 pages, folded) as of August 1, 1984
- ↑ a b c DB project group Hanover-Würzburg (North) (Ed.): Hohnstedt, Edesheim , 12-page Leporello dated July 1, 1984
- ↑ Deutsche Bundesbahn (Ed.): New Hanover – Würzburg line. The Hanover – Northeim section . Brochure, 42-page brochure, Hanover 1986, p. 36.
- ^ A b Deutsche Bundesbahn, project group Hanover – Würzburg North of the Federal Railway Directorate Hanover: The new Hanover – Würzburg line. The Hanover – Northeim section . Brochure (43 pages) from 1984, p. 36.
- ^ Deutsche Bundesbahn, Federal Railway Directorate Hanover, project group H / W North of the railway construction center, department for public relations (publisher): New line Hanover-Würzburg: district Ahlshausen-Sievershausen . Leaflet, four A4 pages, approx. 1980.
- ^ DB project group Hanover-Würzburg (North) (Ed.): New line Hanover-Würzburg: Sehlem, Harbarnsen, Netze . Leporello (14 pages) as of September 1, 1982.
- ↑ Farmers and nature benefit . In: Die Bahn informs , ZDB -ID 2003143-9 , issue 3/1988, p. 14 f.
- ↑ a b Project group NBS Hanover of the Bahnbauzentrale, Bundesbahndirektion Hanover (Ed.): Tunnel construction in the northern section of the new Hanover - Würzburg line . Brochure as of November 1987, p. 17.
- ↑ Axel Gödecke: In and around Northeim: large-scale exercise in the rail tunnel with 350 emergency services . Hessisch Niedersächsische Allgemeine , online, August 10, 2014.