Railway tunnel de Champel, Switzerland

New double track railway Tunnel de Champel is a part of the project CEVA (Cornavin – Eaux Vives – Annemasse)

Client

République et Canton de Genéve, SBB, Switzerland

General contractor

Consortium/Joint Venture Tunnel de Champel, Route de Veyrier 55, CH-1227 Carouge

Construction period

April 2014 – June 2017

Objects descriptions / Description of the objects:

LOT 25.11 Tunnel de Champel:

  • Portal Val d´Arve,
  • Tunnel 1, 509 m length,
  • Tunnel 2, 928 m length.

Construction technology:

  • Tunnel driving is performed by mining methods.
  • The tunnel is divided into stages; the length of the stages is 10 meters.
  • Umbrella support system is providing protection and safety through the whole length of the tunnel.
  • The tunnel is supported by steel arches, shotcrete, 20 m long fiberglass rock bolts.

Executed works:

  • Excavation of tunnel tube, cross section 106 – 128 m2, length 1437 m.