Technical specifications

Scope of work

  • Tunnel for a gas pipeline
  • Length: approx. 4,050 m
  • Internal diameter: 3.0 m
  • start and target shaft
  • installation of the gas pipeline in the tunnel
    using the floating method and subsequent backfill grouting of the tunnel
  • extensive soil investigation

Construction method

  • TBM tunnelling using a Hydroshield (slurry shield)
  • Shield diameter: 3.6 m
  • Steel fibre reinforced segmental lining
  • Wall thickness 25 cm

Geology

  • Potklei (local type of clay)
  • Sands
  • Clays

 

 

 

General data

Project
Ems-Dollard Crossing between Germany and the Netherlands
tunnel for a gas pipeline

Client
Nederlandse Gasunie

Contractor
Wayss & Freytag Ingenieurbau AG
in a joint venture

Construction period
June 2008 to September 2010

Construction costs
€ 45.7 million

Utilisation
Media / Supply
Type
Cable tunnel
Length
4,050 m
Construction Method
TBM tunneling using a Hydroshield (slurry method)
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