United States Department of Transportation
i
Phase 1 - test area investigation report : mine research project GUE-70-14.10 PID No. 18459
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2001-01-01
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Abstract:The GUE-70-14.10 Mine Research Project is the investigation of a 2,200-foot-long section of
Interstate 70 in Guernsey County, Ohio. Portions of the project area pavement were damaged as a
result of mine subsidence. The damaged areas were remediated in 1995 and concerns are present
regarding the post-remediation condition of the soils and bedrock beneath the project. The objective
of the investigation is to detect the presence and ongoing formation of voids or anomalies beneath
the pavement using various geophysical, geotechnical, and groundwater investigative methods.
The project is divided into three phases. The primary purpose of the Phase I Test Area Investigation
was to field test and evaluate, on a small scale, the various field and analytical methods proposed for
the project during the full site investigation (Phase II). The small test area consisted of the eastbound
lanes between Stations 483+00 and 485+00.
The work completed for the test area included an evaluation of methods for a groundwater
investigation, geophysical investigations, and geotechnical analysis. For the groundwater
investigation wells were installed into the coal zone aquifer and several unconsolidated granular
water bearings strata. From the wells, groundwater flow and quality data were obtained and
evaluated. The geophysical investigation included the completion of surfaces seismic and ground
penetrating radar investigations, down-hole seismic and ground penetrating radar investigations, and
down-hole geophysical logging. The geotechnical investigation included the evaluation of
stratigraphy, soil and bedrock strengths, and an evaluation of piping potential.
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