The Gotthard Base Tunnel is a railway tunnel under the Alps in Switzerland. With a length of 57 km and a total of 151.84 km of tunnels, is the longest railway tunnel in the world. The drilling completed on 15 October 2010.1
The project, at a cost of 9830 million Swiss francs, 2 consists of two separate tunnels each contain a path. It is part of Swiss Alp also known as New Railway Link Through the Alps (NRLA) that also includes tunnels and Monte Lötschberg Ceneri between the Swiss cantons of Bern and Valais.
tunnels intended to facilitate the passage of the Alps and establish a direct route suitable for high speed trains. Once completed, the current time of nearly four-hour trip between Zurich and Milan, is reduced to two hours.
the portals will be near the cities of Erstfeld (north) and Bodio (south). Its completion was scheduled for 2015, but during construction problems have delayed the date until 2017.
The new Gotthard Base Tunnel with the Zimmerberg base tunnel form the northern part of San axis Gotthard Alptransit project (yellow: major tunnels - Red: current railway lines - numbers: year of completion).
The route through the St. Gotthard Pass is one of the most important to cross the Alps in the north-south axis in Europe
Transit through this route has increased exponentially since 1980 and the roads and railway lines have reached their limit. To solve these problems and to achieve a way to cross the Alps in a more rapid, Swiss voters decided to build this tunnel through the Gotthard massif at ground level, 600 m below the existing rail tunnel.
Through the current railway line for freight trains have limited the maximum weight at 2 000 t using two or three engines. Once the new tunnel freight trains up to 4 000 t may cross the Alps without additional locomotive and passenger trains may move up to 250 km / h significantly reducing travel times of the routes across the Alps.
Construction responsible for building the company AlpTransit Gotthard is that in order to reduce construction time by half decided to start construction from four different points (finally were five) while located in Erstfeld, Amsteg, Sedrun, Faido and Bodio.
was decided to build a tunnel system with two major single-track tubes, connected each approximately 325 m tunnel service. Trains may change tunnel in one of the two "Stations Multifunction" located in Sedrun and Faido. These stations will house ventilation equipment and technical infrastructure and serve as emergency shutdown and evacuation routes for emergencies.
Access to "Multifunction Sedrun station will be a tunnel nearly flat one km long from the valley where lies the town of Sedrun. There is therefore a local project to transform the station into a railway official stop called Porta Alpina.
tunnel scheme (green progress of the excavation).
Highlights Length: 56,978 m (tunnel west) and 57,091 m (tunnel east)
total length of tunnels and galleries: 153.4 km
Start of construction: 1993 (polls) , 1996 (forthcoming) and 2003 (excavation)
Completion of the work (forecast 2007): 2016 to 2017
Total cost: U.S. $ 6,428 Daily train
million : 200-250
excavated rock volume: 24 million tons. (13.3 million m³)
Number of TBMs (TBM): 4
construction site near Bodio.
Progress obr to
CI Yoseph BUITRAGO 18257871 CRF
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