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RECORD NUMBER: 190 OF 366

OLS Field Name OLS Field Data
Main Title Location of Solution Channels and Sinkholes at Dam Sites and Backwater Areas by Seismic Methods: Part I - Rock Surface Profiling.
Author Drnevic, Vincent P. ; Smit, S. R. ; Clevelan, E. P. ;
CORP Author Kentucky Water Resources Inst., Lexington.
Year Published 1972
Report Number RR-54; DI-14-31-0001-3217; OWRR-A-026-KY; 08466,; A-026-KY(3)
Stock Number PB-220 063
Additional Subjects ( Geophysical prospecting ; Rocks) ; ( Dams ; Subsurface investigations) ; Engineering geology ; Computerized simulation ; Digital computers ; Rayleigh waves ; Abnormalities ; Sites ; Soil mechanics ; Field tests ; Bedrock ; Sinkholes
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-220 063 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 51p
Abstract Sledge hammer seismic refraction surveys and a modified version called downhole shooting are useful for rock surface profiling. Advantages of downhole shooting are calibration at the end points of the survey, measurement of vertical wave propagation velocities directly, and having a refracted wave ray path for almost the entire survey length. The downhole method was simulated with the digital computer. The method can handle any rock surface profile and generates corresponding travel time curves for the forward and reverse profile surveys. This program was used to study the effects of anomalies on the travel time curves. A method of data reduction was developed that enables an estimate of the rock surface profile to be made from the travel time data. Field tests were performed at four sites having soil and rock characteristics different from each other. Rock surface profiles were estimated from the travel time curves using the procedure developed and these were compared with the depth to rock by proof drilling. (Author Modified Abstract)
Supplementary Notes See also Part 2, PB-220 064. Also available as Soil Mechanics Ser-14.
NTIS Title Notes Research rept., Sep 70-Jun 72.
PUB Date Free Form Aug 72,
Category Codes 13B; 8G; 64F; 60B
NTIS Prices PC A04/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326561714
Origin NTIS
Type CAT