LOADS ON LEAKING AND WATERTIGHT TUNNEL LININGS, SEWERS AND BURIED PIPES DUE TO GROUNDWATER

In this note the authors demonstrate that simple application of the principles of effective stress and seepage laws leads to the perhaps surprising result that the long-term loads acting on linings below the water table are unaffected by whether the lining is watertight or not. This is only valid for cases where the original groundwater level is only little affected by the lining acting as a drain, and where the flownet is approximately radial, and is therefore of most relevance to relatively deep tunnels. The practical significance of this result is that it is erroneous to suppose that the total load on a watertight deep tunnel (or sewer lining or buried pipe) in soil would be reduced by allowing the lining to be permeable. By relieving the water pressure in the soil immediately outside the lining. a steady-state seepage would develop and the seepage stresses imposed on the soil grains (and therefore on the lining) would balance the relief of the water pressure.

Media Info

  • Features: Figures; References;
  • Pagination: p. 341-344
  • Serial:
    • Geotechnique
    • Volume: 33
    • Issue Number: 3
    • Publisher: Thomas Telford Limited
    • ISSN: 00168505

Subject/Index Terms

Filing Info

  • Accession Number: 00389312
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Oct 30 1984 12:00AM