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Location of Geologic Discontinuities by Geophysical Techniques

by G. W. Blaney, Univ of Texas at San Antonio, United States,
A. Li, Univ of Texas at San Antonio, United States,
M. W. Lewis, Univ of Texas at San Antonio, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract:

An overview of the seismic refraction method and resistivity methods is given. These two geophysical techniques are integrated into a systematic method for locating geologic discontinuities at construction sites. The effectiveness of the method is demonstrated by using specific characteristics of the geophysical data to locate precisely a normal fault on the University of Texas at San Antonio campus. In particular, changes in seismic wave velocity, resistivity and conductivity were found to be good indicators of the location of the fault.

Subject Headings: Seismic surveys | Geology | Soil surveys | Soil settlement | Seismic waves | Seismic tests | Geological surveys

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