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.

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  • Corporate Authors:

    IPC Transport Press, Limited

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

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Filing Info

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