Foundation Investigation of the Upstream Switchyard of Wilson Dam Powerplant: Microgravity Survey

A microgravity survey consisting of 347 stations was conducted in the upstream switchyard of the Wilson Dam powerplant. The objective of the survey was the detection of subsurface cavities or other anomalous conditions that could threaten the integrity of the switchyard structures. Six anomalous are...

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Bibliographic Details
Main Authors: Yule, Donald E, Butler, Dwain K, Sharp, Michael K
Format: Report
Language:English
Subjects:
ALABAMA
CAVITIES
Civil Engineering
DAMS
DETECTION
DRILLING
ELECTRIC POWER PLANTS
ENGINEERING GEOLOGY
FIELD TESTS
FOUNDATIONS(STRUCTURES)
Geology, Geochemistry and Mineralogy
GEOPHYSICS
GRAVITY
GRAVITY ANOMALIES
KARST
LIMESTONE
LOW DENSITY
MICROGRAVITY
SUBSURFACE
SURVEYS
SWITCHYARDS
TENNESSEE RIVER
WILSOM DAM (ALABAMA)
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Summary:A microgravity survey consisting of 347 stations was conducted in the upstream switchyard of the Wilson Dam powerplant. The objective of the survey was the detection of subsurface cavities or other anomalous conditions that could threaten the integrity of the switchyard structures. Six anomalous areas were identified on the gravity anomaly map and ranked for their interpreted significance. From the results, nine boring locations were selected to investigate the cause of the anomalies. This report presents details of the field survey, data processing interpretations, and recommended drilling locations for subsurface investigation. Original contains color plates: All DTIC reproductions will be in black and white.