LANDSLIDES IN KENTUCKY

A SUGGESTION IS MADE THAT HAVING ADEQUATE SOILS AND GEOLOGICAL INFORMATION CONCERNING POSSIBLE ROUTES FOR HIGHWAY LOCATIONS COULD PREVENT TROUBLE WITH LANDSLIDES IN KENTUCKY. LANDSLIDES ON WESTERN KENTUCKY PARKWAY SEEM TO BE ASSOCIATED WITH SUBSURFACE SEEPAGE WATERS MOVING ALONG IMPERVIOUS SHALES AND UNDER CLAYS. LANDSLIDE CONDITIONS APPEARED TO CORRELATE EXTREMELY WELL WITH THE UNDER-CLAYS OF THE BREATHITT FORMATION. OTHER GEOLOGIC MATERIALS PRONE TO LANDSLIDE DEVELOPMENT INCLUDE THE NEW PROVIDENCE SHALE, OSGOOD SHALE, THE KOPE FORMATION AND SOME MATERIALS OF MISSISSIPPIAN AGE. PROPER CONSIDERATION OF THE GEOLOGICAL AND TOPOGRAPHICAL CONDITIONS BY THE PLANNING AND DESIGN ENGINEERS CAN MINIMIZE THE POSSIBILITY OF FAILURE. A GEOLOGICAL MAPPING PROGRAM IS IN PROGRESS IN THE STATE. THE IMPORTANCE OF LOCATING THE HIGHWAY FACILITY PROPERLY WITH RESPECT TO THE SLOPE OF THE BEDDING PLANES OF THE GEOLOGICAL DEPOSITS IS ILLUSTRATED. A KNOWLEDGE OF THE SLOPE OF THE BEDDING PLANES IS IMPORTANT IN DESIGNING A DRAINAGE SYSTEM TO ADEQUATELY DIVERT SUBSURFACE WATERS AND TO PROTECT THE EMBANKMENT. MANY OF THE SLIDES WHICH HAVE OCCURRED AS A RESULT OF THE DAMMING EFFECT ON A SIDE HILL EMBANKMENT HAVE BEEN LOCATED IN THE TRANSITION ZONE BETWEEN FULL CUT AND FULL FILL SECTIONS. PREPARATION OF COLUMNAR SECTIONS AND IDENTIFICATION OF EACH OF THE HORIZONS OR LAYERS GEOLOGICALLY ARE DESIRED. THE GEOLOGICAL MAPPING PROGRAM SHOULD PROVIDE COMPLETE COVERAGE OF THE STATE. IT IS CONCLUDED THAT IT IS IMPORTANT THAT DESIGN AND LOCATION ENGINEERS REFER TO GEOLOGICAL AND SOILS INFORMATION FOR GUIDANCE AND FOREWARNING SIGNS OF POTENTIAL LANDSLIDES.

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Filing Info

  • Accession Number: 00235433
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Mar 3 1994 12:00AM