PIEZOMETERS FOR PORE-PRESSURE MEASUREMENTS IN FINE-TEXTURED SOILS

WHEN GROUND-WATER OBSERVATIONS ARE DESIRED OVER A PERIOD OF TIME AT ONE PARTICULAR LOCATION, SOME KIND OF OBSERVATION WELL OR PIEZOMETER USUALLY IS INSTALLED AT THE LOCATION. FOR PROTRACTED AND DETAILED OBSERVATIONS OF GROUND-WATER LEVELS OR PRESSURES IN FINE-TEXTURED, LOW-PERMEABILITY SOILS, A SPECIAL TYPE OF PIEZOMETER INSTALLATION MAY BE NECESSARY. THE PURPOSE OF THIS BRIEF REPORT IS TO BRING TO THE ATTENTION OF HYDROLOGISTS A SIMPLE PIEZOMETER USING A POROUS CERAMIC TUBE FOR FILTER POINT. THIS PIEZOMETER IS MORE SENSITIVE TO GROUND-WATER FLUCTUATIONS IN FINE-TEXTURED MATERIALS AND IS MORE RESISTANT TO PLUGGING OF THE POINT BY FINE PARTICLES THAN THE CONVENTIONAL SAND-POINT OBSERVATION WELL FOR WHICH IT SUBSTITUTES. /AUTHOR/

  • Supplemental Notes:
    • 9 Pp, 5 Fig, 4 REF
  • Corporate Authors:

    U.S. Geological Survey

    F Street Between 18th and 19th Street, NW
    Washington, DC    20244
  • Authors:
    • Johnson, A I
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00228914
  • Record Type: Publication
  • Source Agency: Geoscience Abstracts
  • Files: TRIS
  • Created Date: Aug 15 2004 2:10AM