LOCATING AND TRACING SEEPAGE WATER IN UNSTABLE SLOPES, FINAL REPORT

WITH THE INCREASE IN HIGHWAY CONSTRUCTION, THE OCCURRENCE OF LANDSLIDES HAS BEEN GROWING DUE TO THE USE OF DEEPER CUTS AND HIGHER FILLS. MANY LANDSLIDES ON KENTUCKY HIGHWAYS HAVE BEEN CAUSED BY THE GRADUAL WEAKENING OF THE EMBANKMENT DUE TO A DAMMING AND ACCUMULATION OF WATER. THUS, LOCATING AND TRACING SEEPAGE WATER IN UNSTABLE SLOPES BECOMES A SIGNIFICANT TOOL IN DESIGNING SYSTEMS TO REMOVE OR CUT OFF THE WATER SO THAT THE STABILITY OF THE SLOPE IS MAINTAINED OR INCREASED. IN RECENT YEARS, EFFORTS HAVE BEEN MADE TO DEVELOP METHODS WHICH ARE AS EFFECTIVE AS BORINGS AND EXCAVATION BUT REQUIRE LESS TIME AND CAN BE ACCOMPLISHED AT LOWER COSTS. IN THIS INVESTIGATION, SEVERAL METHODS, SUCH AS THE USE OF TRACERS, WATER TABLE OBSERVATION, AND ELECTRICAL RESISTIVITY, WERE CONSIDERED AND STUDIED. DYE- TRACERS TEND TO BE ABSORBED BY CLAYEY SOILS UNLESS DISCRETE VEINS OF WATER EXIST. ELECTRICAL RESISTIVITY IS AFFECTED BY EXTRANEOUS INFLUENCES, SUCH AS GUARDRAILS, PIPE LINES, POWER LINES, ETC. PIEZOMETRIC SURFACES MAY BE DETERMINED FROM BORE-HOLE WELL-WITH OR WITHOUT IMPLANTED GAUGES. ALSO RESISTIVITY IS NOT NECESSARILY PROPORTIONAL TO THE AMOUNT OF GROUNDWATER PRESENT. THE BORED WELLS SEEM FAR MORE RELIABLE. /AUTHOR/

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Filing Info

  • Accession Number: 00204291
  • Record Type: Publication
  • Report/Paper Numbers: 37 pp
  • Files: TRIS, STATEDOT
  • Created Date: Sep 14 1970 12:00AM