Naenser tunnel

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Naenser tunnel
use Railway tunnel
traffic connection Altenbeken – Kreiensen railway line
length 884 m
Number of tubes 1
location
Naenser Tunnel (Lower Saxony)
Red pog.svg
Red pog.svg
Coordinates
West portal 51 ° 52 ′ 27 "  N , 9 ° 53 ′ 55"  E
East portal 51 ° 52 ′ 23 "  N , 9 ° 54 ′ 41"  E

The Naenser Tunnel is a railway tunnel on the Altenbeken – Kreiensen railway line (former name: Herzoglich Braunschweigisch Holzmindener Bahn) in the Northeim district .

The tunnel is 884 meters long (200 Brunswick rods = 3200 feet) and straight. The tunnel was built for two tracks and operated on both tracks until the 1960s. At the moment, however, the line between Stadtoldendorf and Kreiensen and therefore also in the tunnel is only a single track. It leads through Keuper marl, a relatively water-rich soft rock.

From the western tunnel entrance the next town is Naensen and Greene follows on the eastern side . Both portals are decorated with friezes . The nearest transfer station is Kreiensen . Adjacent mountain ranges are the Hube in the south and the Selter in the north .

The tunnel was built between 1862 and 1865 by Franz von Rziha using a new method . During the construction work at that time an enormous amount of timber would have been required to support the vaulted barrel. Therefore, the builder constructed the large tunnel frame out of iron. Much of the forest was spared because wood was only used for the piles and not for the other structures. This then new technology for building urban subways was used for the first time worldwide by Naensen.

literature

  • Franz von Rziha: The new iron tunnel construction method used in the construction of the tunnels at Naensen and Ippensen . 1864 (Google eBook)
  • Association of German Railway Administrations: Organ for the Progress of the Railway System , Volume 18, 1863, S, 241f (Google eBook)

Web links