Seismic refraction method to study the foundation rock of a dam
N. P. Dutta
Journal name: Geophysical Prospecting
Issue: Vol 32, No 6, December 1984 pp. 1103 - 1110
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.