Technical specifications

Scope of work
Section 3.1: Tunnelling under the southern part of Zurich Main Station and construction of a shaft in front of the southern part,

  • 220 running metres of longitudinal tunnels (excavated area: approx. 36 m²)
  • 390 running metres of transverse tunnels (excavated area: 14 m² - 17 m²) as auxiliary tunnels for construction work using the topdown method under the southern part

Section 3.2: Double-track railway tunnel (main tunnel) and parallel escape and rescue tunnel, total length of main

  • Tunnel: 4,537 m
    of which 4,382 m are shield-driven
    internal diameter: 9.74 m
  • Length of escape and rescue tunnel: 4,460 m
    internal diameter: 4.35 m
  • 8 cross-passages
  • 2 emergency exits
  • 105 m of conventional tunnelling between the TBM launching chamber and the cut and cover tunnel in Oerlikon
  • Brunnenhof start shaft
    (diameter: approx. 23 m, depth approx. 37 m)
  • 8 recesses for technical equipment inside the tunnel

Construction method
Section 3.1: Auxiliary tunnels: tunnel excavator with pipe and spile canopy support systems

Section 3.2: Main tunnel: TBM tunnelling using a convertible TBM

  • operated both in hard rock mode (4,105 m)
    and in slurry mode (277 m)
  • Shield diameter: 11,23 m;
  • Double lining
    segmental lining with in-situ concrete inner lining with external water proofing
  • Escape and rescue tunnel: 4,390 m
    constructed by a Gripper-TBM and 70 m using a road header
    TBM diameter: 4.75 m
    lining: shotcrete with wire mesh reinforcement and anchors

Geology
Section 3.1: Ground moraine (glacial gravels)

Section 3.2: Rock (molasse) and loose rock (gravel, lake sediments)

General data

Project
Weinberg Tunnel, Sections 3.1 and 3.2, Zurich,
as part of the Zurich Main Station-Altstetten-Oerlikon Diameter Line

Client
Schweizerische Bundesbahnen SBB
[Swiss Federal Railways]
represented by Infrastruktur-Projekt Management Durchmesserlinie

Contractor
Wayss & Freytag Ingenieurbau AG
in a joint venture

Construction period
September 2007 to May 2014

Construction costs
€ 246 million

Utilisation
Infrastructure
Type
Railway tunnel, double-track
Length
4,537 m
Construction Method
TBM tunneling using a convertible TBM

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