FIRST TWO MACHINES READY TO EXCAVATE CHANNEL TUNNEL PILOT BORES

The tunneling machines which will begin to drill the service bores under the English Channel for the Channel Tunnel are in place. The British-built machine will bore through impervious lower chalk at a rate of 6 m/h. The cutting head is rotated by hydraulic motors within a drum housing the electro-hydraulic power packs. The U.S.-designed equipment which will be working from the French side has disc cutters. Following the excavating machines will be units that will install the precast tunnel liners.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03735346
• Corporate Authors:

  IPC Transport Press, Limited

  Dorset House, Stamford Street
  London SE1 9LU,   England 
• Publication Date: 1974-9

Media Info

• Features: Photos;
• Pagination: p. 353
• Serial:
  • Railway Gazette International
  • Volume: 130
  • Issue Number: 9
  • Publisher: DVV Media Group
  • ISSN: 0373-5346
  • Serial URL: http://www.railwaygazette.com/about-us.html

Subject/Index Terms

• TRT Terms: Excavation; Technology; Tunneling
• Identifier Terms: Channel Tunnel
• Geographic Terms: United Kingdom
• Old TRIS Terms: Excavation technology
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00072452
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 13 1974 12:00AM