The article describes the excavation and lining of the fourth construction section of Essen's underground railway. The tunnel is located in an area of green sand and coarse silt in which the water table is located 5 M above the tunnel floor. As compressed air tunnelling methods could not be used because of thin cover and the soil structure, it was necessary to lower the water table by sinking wells. Tunnel excavation was performed with blade shield tunnelling equipment designed for use in unstable ground conditions. The article gives details of excavation methods used with this equipment in a built-up area and evaluates the resulting ground settlements.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Gruner, H
  • Publication Date: 1978-6

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 24-28
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00188340
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 27 1981 12:00AM