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

Abstract

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 shale, which was gathered at Kitagou in Miyazaki for application of practical problems. As a result, we showed that “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 in layered formation rock as shale, and aeolotropy by lamination side of shale was grasped by this index.