Longest rail tunnel in the world breaks through

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Longest rail tunnel in the world breaks through

Recently I saw the construction of this tunnel, as we went over the Gottherd Pass in Switzerland. This is one huge construction, an effort that surpass the enormous roads and tunnels that are already in the Swiss Alps.

Miners in central Switzerland have pierced a first stage of the new tunnel through the Gotthard, which is set to become the longest rail tunnel in the world.

Here

The 57km-long tunnel on the main north-south transalpine route is part of a major upgrade of Swiss rail transit infrastructure and is due to open for traffic in 2016.

The breakthrough in the tunnel section between Faido and Bodio on Wednesday came after four years of work. The giant boring machine reached its target with a precision of a few centimetres.

The work was delayed by 17 months because the drill had to pass through difficult geological rock formation in the 13.5km tunnel section.

"It is a mere pin prick for the mountain, but a breakthrough for mankind," said Peter Zbinden head of the construction company AlpTransit during a ceremony attended by more than 1,000 guests.

Zbinden also pointed out that the new Gotthard tunnel was a key element of the main transalpine rail link. He said the aim was to bring as much of the road freight traffic on to rail and promote Switzerland's most sustainable environment project.

A second breakthrough in the second tube on the same section is expected next month. But the whole tunnel is not expected to open for rail services before 2016.

Officials say just under 99km of the total 153.5km-long tunnel system, including shafts and galleries, had been excavated by the beginning of September, with about 2,200 miners working on the construction sites.

Work, which is underway at seven different sites, began after a nationwide vote in 1998.

The first rail tunnel through the Gotthard, which is 15km long, was inaugurated in 1882, while the Gotthard road tunnel was opened in 1980.
By netchicken: posted on 7-9-2006








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