AN APPLICATION OF “RESPONSE SOUND PRESSURE PULSE INCLINATION METHOD” FOR BORING CORE OF GRANODIORITE

This is one of the studies aimed at quantitative evaluation of the indices for rock mass classification that deals with “judgment method by the hammer tapping”. In this study, we examined the tapping test and unconfined compression strength using boring core of granodiorite, which was gathered at Kijyo in Miyazaki for application of practical problems. As a result, we showed “response sound pressure pulse inclination” can be applied as a quantitative index, like N-value of soil boring log, for strength and ductility of stratum. So we propose this inclination to be used as a quantitative index for rock mass boring core.