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Doing it in Europe

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nitpicker1
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« on: June 02, 2016, 03:54:50 pm »


Gotthard tunnel: World's longest and deepest rail tunnel opens in Switzerland
1st June 2016

The world's longest and deepest rail tunnel has officially opened in Switzerland, after almost two decades of construction work.
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.
Switzerland says it will revolutionise European freight transport.
Goods currently carried on the route by a million lorries a year will go by train instead.
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.
*       Switzerland's engineering triumph
*       In pictures: Tunnel's weird opening ceremony


http://www.bbc.com/news/world-europe-36423250

Ummmmm

Where did they put all the tailings that came out of it?



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guest49
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« Reply #1 on: June 02, 2016, 04:52:31 pm »

Quote
Where did they put all the tailings that came out of it?
Don't know, but I travelled through Switzerland a few years back, and the valleys there would soak up the tailings from a thousand tunnels like this, and you wouldn't be aware of where they had been spread
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Kiwithrottlejockey
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« Reply #2 on: June 02, 2016, 11:20:18 pm »


When the Rimutaka Tunnel was bored in the 1950s, the tunnel tailings were used to create embankments for several kilometres on the approaches to the tunnels (yep, they bored two of them), as well as the terrace where Maymorn railway station is, with a lot of that terrace now being covered in houses and lifestyle blocks where there was once a deep gully.

If tunnels are bored through rock, the tailings are often in hot demand as base material for building roads, building foundations, etc. So much so that when KiwiRail lowered the floors of all the tunnels on the J'ville line a few years ago so the new Matangi EMUs would fit through them, all the rock they pulled out of the tunnels when they lowered the floors ended up being stockpiled at Ngauranga with security guards contracted it to guard the piles of tailings 24/7 to stop building and civil engineering contractors from helping themselves in the dead of night.

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