Gargantuan Hose Washes Out the Gotthard Tunnel

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December 2009 It's abolutely huge: the 1520-meter-long water hose designed by Eddelbüttel &, Schneider, a ContiTech company, for use in the Gotthard Tunnel drilling project. With an inside diameter of 300 mm, this design tips the scales at a total weight of over 75 t.

“That is the longest individual reelable hose that we have ever designed and wound onto a reel,“ points out a delighted Marcus Prinz, general manager of Eddelbüttel & Schneider in Hamburg. The hose was manufactured by ContiTech Rubber Industrial in Szeged, Hungary.

Since 2002, four gigantic drilling machines have been digging their way through the mountain from both sides. Around 24 million metric tons of rock have already been moved. The hose transports the water required to wash the overburden out of the tunnel. This all functions in a closed circuit in which the used water is used again.

The base Gotthard Tunnel under construction in Switzerland is a monumental project. The world’s longest traffic tunnel, it extends 57 km, flattening out the rail route from Basle to Milan. Upon completion of the tunnel in 2016, up to 250 trains will be able to circulate each day at twice the present speed.

Gargantuan Hose Washes Out the Gotthard Tunnel
Gargantuan Hose Washes Out the Gotthard Tunnel