In an examination of BR/SNCF proposal for a single track channel tunnel, the author first reviews the history of the previous schemes. The latest proposal provides for a 6 M diameter running tunnel connected by cross-passages to a 4.5 M diameter service tunnel, the tunnels being at 15 M centres. The track will be continuously welded rail on an in-situ concrete slab. In the running tunnel two continuous walkways will be provided should passengers have to leave the trains. Ventilation will be provided by pumping air from each end into the service tunnel to feed the running tunnel through one-way grilles in the cross-passage doors. The possibility of adding a second running tunnel in the future is catered for in the design.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Lamming, RAE
  • Publication Date: 1980-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00322813
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Dec 30 1980 12:00AM