The construction of the first section of the S-bahn underground railway networks in Frankfurt and Stuttgart has provided the stimulus for the development of soft-ground tunnelling techniques. After its completion, the 6.1 km Frankfurt network will connect the eastern and southern suburban lines. Geological conditions consist of gravelly sands on a formation of clay marl. Four parallel single-track 7 M diameter tubes were shield-driven with a permanent lining of cast iron segments. Subsidence was avoided by the injection of mortar between the segments and soil. The covering gravel was consolidated by an injection of a bentonite suspension. The article details the use of cut-and-cover methods and the New Austrian Tunnelling Method at the crossing of the S-bahn station at Frankfurt station. A further 385 M tunnel was constructed by the NATM under main streets and buildings.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Martinek, K
  • Publication Date: 1979-11

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 41-47
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00309927
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: May 7 1981 12:00AM