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Seismic refraction method to study the foundation rock of a damNormal access

Author: N. P. Dutta
Journal name: Geophysical Prospecting
Issue: Vol 32, No 6, December 1984 pp. 1103 - 1110
DOI: 10.1111/j.1365-2478.1984.tb00757.x
Organisations: Wiley
Language: English
Info: Article, PDF ( 317.8Kb )

Dynamic elastic moduli like E, μ, K and μ of the foundation rock of a dam have been determined by finding Vp- and Vs-velocities by seismic refraction with a hammer as source. Some parameters such as “fracture frequency” and “rock quality designation” (RQD) of the foundation rock have been derived using “average regression curves” and Vp-velocities. By comparing K/μ with Vp/Vs, a few locations showing weathered conditions have been demarcated. This compares well with RQD values of those locations.

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