THE HISTORY OF THE RESEARCH AND DEVELOPMENT OF THE APPARATUSES MEASURING BOTH THE SHEAR STRENGTH AND THE ROUGHNESS PROFILE OF ROCK JOINTS

Abstract

When one evaluates the shear strength of rock joints in detail, the investigation based on both mechanical and geometrical condition should be considered. As for mechanical conditions, shear behaviors of rock joints is affected by loading condition. As for geometrical conditions, shear behaviors of rock joints should be heavily dependent on the configuration of rock joints, which is so-called roughness profile. From these viewpoints, the authors have developed both the apparatuses measuring both the shear strength and the roughens profile of rock joints. This paper describes the history of the developed apparatus and their applicability.