Taking Pictures of Boone Boreholes

SEPTEMBER 8, 2017—Optical and acoustical “televiewers” are used to create images of boreholes at Boone Dam. These high-tech instruments rotate 360 degrees as they drop about five to eight feet per minute down the bore hole. The images relay valuable data to our engineering/design team. Each hole has its own specified test. When cameras are not present, a bentonite slurry mixture is pumped down the boreholes. The testing helps our design team determine the mixtures that will be used in the final composite seepage barrier that will be built underneath the earthen embankment.

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Katie Rievley and Alex Goins prepare an optical televiewer that will take images of the drill hole.