The prediction of surface settlement above tunnesl in clay soils is discussed. In the case of a shield-driven tunnel in clay, settlement occurs mainly as a result of ground deformation into space created by the excavation. The deformation can be divided into (1) face deformation, (2) radial deformation, and (3) grout deformation. The surface settlement semi-profile tunnel in clay takes the form of a normal probability curve. The extent of the curve and magnitude of maximum settlement above the center-line can both be predicted from empirical relationships expressed in terms of the tunnel diameter D and depth to axis Z. /TRRL/

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Attewell, P B
    • FARMER, I W
  • Publication Date: 1975-1

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 58-62
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129574
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM