ABSTRACT
This chapter deals with the application of CNS technique in practical problems. The contribution of the surrounding rock mass stiffness is considered to be constant, where the normal stress continues to vary during deformation. The laboratory results reveal that the CNL method always overestimates the peak friction angle, hence, overpredicts the joint shear strength. The chapter presents the stability analysis of a typical underground roadway in jointed rock using the Universal Distinct Element Code (UDEC). It illustrates the safety analysis of a slope supported by grouted bolts in a simplified manner. The ground reaction curve determined from UDEC analysis represents a typical stable excavation.
