Part of the expansion and new Karlsruhe-Basle section to provide access to the New Transalpine Rail (NEAT).
Wayss & Freytag Ingenieurbau AG
E. Züblin Tunnelbau AG
Marti Tunnelbau AG
Jäger Bau GmbH
Open water drainage using submersible pumps to the tunnel portals and during tunnelling operations.
Use of Tsurumi submersible sewage pumps for complete drainage. Pump series used: KTZ, KTV, KRS with agitator.