Technical specifications

2 single-track railway tunnels

  • Length: 2 x 6,822 m
  • Internal diameter: 9.60 m

2 cut and cover tunnel sections

  • Each approximately 75 m long
  • 13 cross-passages
  • 2 tunnels for technical purposes

Railway sections in a cutting and on an embankment

  • Lengths: 1,000 m and 340 m

Construction of sonic boom structures at all 4 tunnel portals in order to avoid the sonic boom effect

  • Length: 75 m

Construction method

  • TBM tunnelling using 2 Mixshields (slurry shields)
  • Shield diameter: 10.88 m
  • After 1,500 m conversion of TBMs from slurry shield mode to hard rock mode
  • Segmental lining
  • Thickness of segments: 45 cm
  • Lowering of groundwater table by means of deep wells during tunnelling in open mode (water pressure 6.1 bar)

Geology

  • Buntsandstein (variegated sandstone)
  • Fault zone with Keuper sandstone formations

General data

Project
Finne Tunnel
Part of new Erfurt-Leipzig-Halle railway line
Single-track railway tunnel

Client
DB Netz AG [German rail company]
represented by DB Projekt Bau GmbH
Projektzentrum Leipzig

Contractor
Wayss & Freytag Ingenieurbau AG
as technical leader of a joint leader

Construction period
December 2006 to September 2012

Construction costs
€ 270 million

Utilisation
Infrastructure
Type
Railway tunnel, single-track
Length
2 x 6,822 m
Construction Method
TBM tunneling using 2 Mixshields

Related Projects
Metro Singapore, North-East Line, Lot
Metro Singapore, North-East Line, Lot
Singapore

2.5 km long underground railway line in a double-tube underground track system for the North-East-Line (NEL) in Singapore with two stations, two underground passages and a flyover.

Read more
Crossrail Western Tunnels
Crossrail Western Tunnels
Great Britain

Upgrade for London’s Wastewater System

Read more
Mine Water Drainage Tunnel, Ibbenbüren
Mine Water Drainage Tunnel, Ibbenbüren
Germany

Length: approx. 7,400 m 2 drives: West 3,230 m and East 3,8700 m in length Internal diameter: 3.60 m External diameter: 4,50 m bore diameter approx. 4.80 m

Read more