ABSTRACT
It is well known that the shear strength of joint included in rock mass considerably affects the stability of rock slope. There are many experimental researches on the shear strength of rock joint. The aim of this study is to evaluate the shear strength of rock joint by using analytical procedure. Following the experiments carried out by Patton(1966), the analysis is performed under varying the number of asperity and the inclination of asperity. The followings are concluded in this study:(1) the shear strength of rock joint increased with increasing the number of asperity and the inclination of asperity; (2)the change of the shear strength of rock joint against the normal stress was shown to be properly expressed by the change of failure mode; and (3)the proposed analytical procedure was shown to be applicable to jointed rock.
