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World's Longest Tunnel Commissioned Today - Travel - Nairaland

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World's Longest Tunnel Commissioned Today by phveektor(m): 4:47pm On Jun 01, 2016
The world's longest and deepest rail tunnel has officially opened in Switzerland today.

The 57km (35-mile) twin-bore Gotthard base tunnel will provide a high-speed rail link under the Swiss Alps between northern and southern Europe.

The tunnel has overtaken Japan's 53.9km Seikan rail tunnel as the longest in the world and pushed the 50.5km Channel Tunnel linking the UK and France into third place.

The project, which cost more than $12bn (£8.3bn) to build, was endorsed by Swiss voters in a referendum in 1992. Voters then backed a proposal from environmental groups to move all freight travelling through Switzerland from road to rail two years later.

The completed tunnel travels up to 2.3 km below the surface of the mountains above and through rock that reaches temperatures of 46C.

Engineers had to dig and blast through 73 different kinds of rock, some as hard as granite and others as soft as sugar. More than 28m tonnes of rock was excavated, which was then broken down to help make the concrete used to build the tunnel.

Now the completed tunnel, delivered on time and within budget, will create a mainline rail connection between Rotterdam in the Netherlands and Genoa in Italy.

When full services begin in December, the journey time for travellers between Zurich and Milan will be reduced by an hour to two hours and 40 minutes.

The tunnel's course is flat and straight instead of winding up through the mountains like the old rail tunnel and a road tunnel opened in 1980.

About 260 freight trains and 65 passenger trains will pass through the tunnel each day in a journey taking as little as 17 minutes.

Read more>>>http://www.draynehub.com/en/worlds-longest-tunnel-commissioned-today/

Re: World's Longest Tunnel Commissioned Today by Nobody: 8:18pm On Jun 01, 2016
Re: World's Longest Tunnel Commissioned Today by Blackkie: 11:36pm On Jun 01, 2016
When will Nigeria build such?

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Re: World's Longest Tunnel Commissioned Today by phveektor(m): 1:37pm On Jun 02, 2016
When will Nigeria build such?
Someday hopefully

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