SOFT GROUND TUNNELLING PROBLEMS SOLVED IN GERMAN METROS

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:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• 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:
  • Tunnels & Tunnelling International
  • Volume: 11
  • Issue Number: 9
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Business districts; Construction; Construction management; Cut and cover tunneling; Drilling; Geological events; Gravel; Prevention; Sand; Settlement (Structures); Shielding (Tunneling); Soil stabilization; Subsidence (Geology); Subways; Tunneling machines; Tunnels
• Identifier Terms: New Austrian Tunneling Method
• Geographic Terms: Frankfurt am Main (Germany); Germany
• Old TRIS Terms: Geological conditions; Subway construction
• ITRD Terms: 302: Business district; 3666: Construction method; 3871: Drilling; 8125: Germany; 4575: Gravel; 9149: Prevention; 4105: Sand; 5792: Settlement; 3394: Shield driving; 3374: Tunnel; 1191: Underground railway
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Public Transportation; Security and Emergencies; I25: Design of Tunnels; I54: Construction of Tunnels;

Filing Info

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