GROUND SETTLEMENT ABOVE SHIELD DRIVEN TUNNELS IN CLAY

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:
  • 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:
  • Attewell, P B
  • FARMER, I W
• Publication Date: 1975-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 58-62
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 7
  • Issue Number: 1
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Calculation; Clay; Deformation; Forecasting; Ground settlement; Mathematical models; Probability; Shields (Tunnels); Tunneling; Tunnels
• Old TRIS Terms: Shields (Tunneling)
• ITRD Terms: 6464: Calculation; 4177: Clay; 132: Forecast; 6473: Mathematical model; 6534: Probability; 5792: Settlement; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Data and Information Technology; Geotechnology; Highways; I54: Construction of Tunnels;

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