Engineering

World’s longest railway tunnel is open

It is so far: the Gotthard tunnel celebrates its opening on June 1, 2016. The longest railway tunnel in the world stands for several engineering fears. Which one? 

17 years after the first explosion in the main gallery, on June 1, 2016, the Switzerland will officially open the 57 km long Gotthard Base Tunnel. Guests and some 300 journalists from home and abroad, among them German Chancellor Angela Merkel and Italian Prime Minister Matteo Renzi come to the opening ceremony of the longest railway tunnel in the world, which connects Valley floor in the URI Erstfeld with Bodio in the canton of Ticino, over 1000. On later weekends by the 4th and 5th of June a folk festival takes place for the public, up to 100,000 visitors will make their way to the. The highlights: first tunnel rides with the Gotthard shuttle with up to 200 km/h, productions of Swiss artists and an interactive exhibition.

Trains can rush through with 250 km/h under the Alps

To tell, there are some in the exhibition. Because on the Gotthard Base Tunnel is not only the pressure of over 2000 m-high mountain pass, but also the pressure of European expectations. With the two-pronged tube, especially a faster and cheaper freight from Germany and the Benelux countries will be possible after Italy. Because the route through the Gotthard massif has no significant grades, so that freight trains in the future can dispense with the time-consuming pairing of an extra locomotive.

17 years after the first explosion in the main gallery, on June 1, 2016, the Switzerland will officially open the 57 km long Gotthard Base Tunnel. Guests and some 300 journalists from home and abroad among them German Chancellor Angela Merkel and Italian Prime Minister Matteo Renzi come to the opening ceremony of the longest railway tunnel in the world, which connects Valley floor in the URI Erstfeld with Bodio in the canton of Ticino, over 1000. On later weekends by the 4th and 5th of June a folk festival takes place for the public, up to 100,000 visitors will make their way to the. The highlights: first tunnel rides with the Gotthard shuttle with up to 200 km/h.

Foto: AlpTransit Gotthard AG
Foto: AlpTransit Gotthard AG

Trains can rush through with 250 km/h under the Alps

To tell, there are some in the exhibition. Because on the Gotthard Base Tunnel is not only the pressure of over 2000 m-high mountain pass, but also the pressure of European expectations. With the two-pronged tube, especially a faster and cheaper freight from Germany and the Benelux countries will be possible after Italy. Because the route through the Gotthard massif has no significant grades, so that freight trains in the future can dispense with the time-consuming pairing of an extra locomotive.

Trains can rush through with 250 km/h under the Alps

To tell, there are some in the exhibition. Because on the Gotthard Base Tunnel is not only the pressure of over 2000 meters high mountain, but also the pressure of European expectations. With the two-pronged tube, especially a faster and cheaper freight from Germany and the Benelux countries will be possible after Italy. Because the route through the Gotthard massif has no significant grades, so that freight trains in the future can dispense with the time consuming pairing of an extra locomotive.

AlpTransit Gotthard
Foto: AlpTransit Gotthard AG

Because they can drive through the tunnel also faster, up to 260 trains can be per day get through so far there are 180. Also passenger trains to cross the Alps soon faster. You can speed up to 250 km/h.

Incredible precision: breakthrough with only 4 mm displacement of the target axis

The Gotthard Base Tunnel is the result of engineering and technical feats. The discovery, such as, is a prime example of the precision of the tunnel builders. You did it, that both tunnel boring machines to only 4 mm vertical and 8 mm horizontal differed from the reference axis. 400m long tunnel drills have 4700 HP.

The gigantic drilling heads weigh 225 t and 9.43 m in diameter. You turned 6 rpm to make 38 m per day.

More concrete than in the highest building in the world

In the tunnels, workers have installed concrete of about four million tonnes around 40 times as much as in the Burj Khalifa, the world’s tallest building. “For the work below ground concrete has to fulfill conflicting requirements”, says Rene Bolliger, head of underground construction at BASF. “On the mile-long road in the mountain of concrete must stay for hours on end can be processed and may be not.

AlpTransit Gotthard
Foto: AlpTransit Gotthard AG

Same time the concrete must be harden, when being sprayed onto the tunnel wall.” This was made possible by the right combination of concrete admixtures. Plasticizer make especially flowing concrete and can be processed, spraying concrete Accelerator, however, the concrete after the injection on the tunnel wall immediately solidify and harden.

Terror fear: 2000 soldiers and special staff on folk festival

There are unfortunately also to another record after the terrorist attacks in Paris and Brussels. The Federal Government has set a budget of three million Swiss francs for the safety precautions.