Norrala tunnels
Map with all coordinates: | Norrala tunnels | ||||
|---|---|---|---|---|
| use | Railway tunnel | |||
| traffic connection | Stockholm – Sundsvall railway line | |||
| length | 3850 m | |||
| Number of tubes | 1 | |||
| business | ||||
| operator | Trafikverket | |||
| release | 1999 | |||
| location | ||||
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| Coordinates | ||||
| North portal | 61 ° 23 ′ 42 " N , 16 ° 59 ′ 38" E | |||
| South portal | 61 ° 21 ′ 43 " N , 17 ° 0 ′ 54" E | |||
Norralatunneln is a rail tunnel in Sweden .
It lies between Söderhamn and Enånger on the Stockholm – Sundsvall railway line ( Ostkustbanan , German East Coast Railway ) in Gävleborg County .
Technical specifications
The 3850 meter long tunnel is single track and was opened to traffic in 1999. It is on a slope of about five to ten per thousand. The northern tunnel entrance is around 30 meters higher than the southern entrance. The tunnel is divided into eight monitoring sections so that the dispatcher can always see the position of the train in the tunnel. There are service tunnels in three places.
In the Banverket network , the tunnel was Sweden's longest railway tunnel until 2009. The tunnel on the private Arlanda Nedre – Arlanda Norra railway under Stockholm / Arlanda Airport , which was opened in 1999, is 5.08 kilometers long, and the Namntall tunnel , opened in 2009 on the Botniabana, is six kilometers long .
The tunnel is equipped with gates that are locked in winter. This should prevent the water in the tunnel from freezing due to the geothermal energy . The goals consist of a six-part curtain made of ten millimeter thick, fabric-reinforced rubber. These parts are each 1.5 m wide, suspended from the ceiling and hang freely downwards. The gates can be opened electrically and controlled by a security system with counterweights.
The gates are secured by gate signals that show a white light when the gates are open. The gate signals also have advance signals 800 meters in front of the gate signal for trains not controlled by ATC . These flash yellow when the gates are closed. When a train approaches, the gates are always opened and closed at the same time.
Further information
The excavation material from the Norrala tunnel was used, among other things, to build Alir's Öga in Söderhamn, Sweden's largest work of landscape art .
On August 10, 2013, a train carrying around 180 passengers got stuck in the tunnel because the inside of the tunnel was flooded due to heavy rainfall.
Individual evidence
- ↑ a b Beskrivning av portar vid tunneln på linjen Söderhamn västra - Losesjön (Norrala tunnel). (PDF; 76 kB) In: Dlo Gävle, Underlag till Linjebok. Trafikverket, archived from the original ; Retrieved October 30, 2013 (Swedish).
- ^ Johan Augustin: Mer regn väntas i översvämmat Söderhamn. Dagens Nyheter, accessed October 30, 2013 (Swedish).
Web links
- Alir's Öga. Sculptörförbundet, accessed October 30, 2013 (Swedish).