USE OF THE DETERMINISTIC AND PROBABILISTIC METHODS IN SLOPE STABILITY CALCULATIONS

The article presents the results of slope stability calculation using deterministic and probabilistic approaches in a 2D setting. The deterministic method is based on the average value of the Coulomb strength parameters and soil specific gravity, and the slope stability analysis is performed using the limitequilibrium methods: Bishop, Fellenius, Morgenstern–Price, Spencer, Janbu, Shahunyants. The probabilistic approach takes into account spatial variability, which is determined using the Inverse Distance Weighted. The analysis results show the influence of deterministic and probabilistic approach on the safety factor, the probability of failure, and the reliability index of slopes.