AN EXTENSION TO THE THEORY OF THE CONSTANT HEAD IN SITU PERMEABILITY TEST

THE THEORY OF THE IN SITU CONSTANT HEAD PERMEABILITY TEST IS SHOWN TO BE STRICTLY VALID ONLY IF THE SOIL BEHAVES AS A POROUS PERFECTLY ELASTIC MEDIUM. FOR THIS IDEAL SOIL THE FLOW RATE IS GIVEN BY AN EXPRESSION WHICH HOLDS NOT ONLY FOR INFLOW AND OUTFLOW TESTS, BUT ALSO FOR EITHER A RIGID OR AN INFINITELY COMPRESSIBLE PIEZOMETER TIP, I.E., A SPHERICAL CAVITY. THE THEORY HAS BEEN EXTENDED TO TAKE ACCOUNT OF THE ANELASTIC BEHAVIOR OF REAL SOILS. IT IS FOUND THAT THE PIEZOMETER COMPRESSIBILITY, THE MAGNITUDE OF THE PORE WATER PRESSURE PARAMETER A OF THE SURROUNDING SOIL, AND THE DIRECTION OF FLOW ALL HAVE AN IMPORTANT INFLUENCE ON THE RELATION BETWEEN FLOW RATE AND TIME. /RRL(A)/

  • Availability:
  • Supplemental Notes:
    • Vol 20, No 2, PP 193-197, 2 FIG, 19 REF
  • Corporate Authors:

    Road Research Laboratory /UK

    ,    
  • Authors:
    • Gibson, R E
  • Publication Date: 0

Media Info

  • Serial:
    • GEOTECHNIQUE
    • Volume: 4
    • Issue Number: 3
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00229390
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: May 10 1971 12:00AM