Develop correlations between soil parameters in unsaturated condition – Jandola landslide as case study

Abstract

The focus of this research is on comparing slope factor of safety determined from computer modeling for basic slopes using frequently used limit equilibrium methods to the less typically used finite element methods. Several various slope geometry and material properties combinations are used in the comparison study. The main objective of this research is to develop useful correlations for slope stability analysis projects. Useful correlations are developed in seismic and non-seismic conditions between factor of safety with shear strength and shear stresses in soil slopes. It is found that the seismic and non-seismic factor of safety values are correlated at 99.6 % applicability percent. Shear strength and shear stress are correlated with non-seismic factor of safety at 99.5 % applicability. Similarly, shear strength and shear stress are correlated with seismic factor of safety at 100 % applicability value. Non-seismic slope factor of safety in case of limit equilibrium analysis is correlated with non-seismic factor of safety in case of finite element analysis at 83.8 % applicability. Jandola landslide is considered as case study to cross check the correctness of the developed correlations. These correlations can be used in slope stability analysis projects.