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SEISMIC REFRACTION METHOD TO STUDY THE FOUNDATION ROCK OF A DAM *
Author(s) -
DUTTA N. P.
Publication year - 1984
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1984.tb00757.x
Subject(s) - geology , foundation (evidence) , seismic refraction , halite , refraction , geotechnical engineering , rock mechanics , hammer , seismology , mineralogy , geomorphology , materials science , physics , history , archaeology , structural basin , optics , metallurgy
A bstract Dynamic elastic moduli like E , μ, K and μ of the foundation rock of a dam have been determined by finding V p ‐ and V s ‐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 V p ‐velocities. By comparing K /μ with V p /V s , a few locations showing weathered conditions have been demarcated. This compares well with RQD values of those locations.