Re:World's longest and deepest rail tunnel to open in Switze...
by engenier on Saturday June 04, 2016 @04:22AM
(#11835505)
> Clearly you can... Let's see:
One involves carving a 150km tunnel through a granite massif which is the Alps in a scale that never before was done in history of mankind, the other involves drilling a tunnel through alluvium and sedimentary deposits pretty much like any medium-scale tunneling work.
One involves carving a 150km tunnel through a granite massif which is the Alps in a scale that never before was done in history of mankind, the other involves drilling a tunnel through alluvium and sedimentary deposits pretty much like any medium-scale tunneling work.