CONFERENCE ON SOIL MECHANICS SOIL HYDRAULICS. MEASUREMENT OF THE PERMEABILITY COEFFIEIENT OF IN-SITU SOILS BY MEANS OF PUMPING TEST /IN FRENCH/

THE ADVANTAGES OF LATERAL PUMPING TESTS OVER LEFRANC TESTS FOR DETERMINING THE PERMEABILITY COEFFICIENT ARE MENTIONED, AND THE CONDITIONS, UNDER WHICH PUMPING TESTS ARE CARRIED OUT, ARE EXAMINED. THE APPLICATION OF THE THEIS AND DUPUIT METHODS TO THE INTERPRETATION OF PUMPING TEST RESULTS IS DISCUSSED. THE SELECTION OF AN INTERPRETATION METHOD DEPENDS ON THE HOMOGENEITY OF THE SOIL UNDER STUDY. TESTS ON CRACKED MARL HAVE SHOWN THAT THE PERMEABILITY COEFFICIENT CALCULATED BY THE DUPUIT METHOD IS GENERALLY HIGHER THAN THAT CALCULATED BY THEIS METHOD. IF THE SOIL PERMEABILITY COEFFICIENT, IN THE VICINITY OF THE PIEZOMETER, DIFFERS GREATLY FROM THE OVERALL PERMEABILITY COEFFICIENT, THE TWO METHODS WILL GIVE DIFFERENT RESULTS. BOTH INTERPRETATION METHODS ARE RECOMMENDED WHEN DEALING WITH SOILS OF LOW HOMOGENEITY. THE DUPUIT METHOD GIVES A MORE ACCURATE VALUE OF THE OVERALL PERMEABILITY COEFFICIENT WHILE THE THEIS METHOD FACILITATES THE EVALUATION OF SOIL HETEROGENEITY AND THE CALCULATION OF WATER STORAGE COEFFICIENT VALUE NEEDED FOR STUDYING TRANSIENT FLOWS. /LCPC/RRL/

  • Supplemental Notes:
    • 27 Pp, 19 FIG, 7 REF
  • Corporate Authors:

    Equipment Ministry /France

    ,    

    Laboratoire Central des Ponts et Chausees (LCPC)

    Boulevard Lefebvre 58
    Paris Cedex 15,   France  F-75732
  • Authors:
    • Josseaume, H
  • Publication Date: 1968-11

Subject/Index Terms

Filing Info

  • Accession Number: 00234660
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Sep 21 1970 12:00AM