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Endress+Hauser provides measurement for Gotthard tunnel, the world’s longest railway tunnel

9th June 2016

  

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Endress+Hauser  (0.07 MB)

Endress+Hauser provides measurement technology for tunnel drainage
After 20 years of planning and construction, Switzerland celebrates the completion of the Gotthard Base Tunnel. At 57 kilometers, it’s the world’s longest railway tunnel. 2,300 meters of solid rock rises above the new line at its deepest point. The construction must not only withstand extreme mountain pressure but also substantial volumes of mountain water must be prevented from seeping in.

To make sure the entire tunnel stays dry, two drains were laid in the floor of each of the single-track tubes. The drainage system separates the (clean) mountain water from the (mostly clean) wastewater that is drained off for removing impurities during operations or in the event of an accident. Every second, five liters of wastewater are carried away from each tunnel tube in every direction. The water is collected in catch basins at both ends of the tunnel and checked for any pollution.

A project of symbolic character
The measurement technology for the tunnel drainage originates from process automation specialist Endress+Hauser: 180 instruments, some explosion protected, and three measuring panels detect flow volumes and levels of mountain and wastewater, conductivity, the pH value and the turbidity of the wastewater.

For Stefan Bürki, the project manager in charge of the project at Endress+Hauser Switzerland, the installation has a very special meaning and stated: “I am proud to be part of this once-in-a-lifetime project!” For further information, please visit www.za.endress.com

Edited by Creamer Media Reporter

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