A slope stability analysis of an open-pit mine to evaluate its suitability as a site for the intersection of the S-7 and S-52 expressways

This paper presents a comprehensive approach to the numerical modelling of the geotechnical issues related to the stability of the slopes of a former open-pit mine. The mine is located within short distance of the planned S-7 expressway route and the northern bypass of Krakow; therefore, there is a need of opinion as the project might have a significant impact on the surrounding area including structures planned nearby, as well as stability of slopes of former open-pit mine. The finite element method (FEM) was applied to the numerical analysis with the specific aim of assessing the risk of the movement of soil mass as far as the slopes of the Zesławice open-pit mine are concerned [4]. Field work and numerical analysis were conducted in reference to land reclamation plans of former Miocene clay mine located in the Carpathian Foredeep. The numerical modelling includes zoning plans. The numerical modelling was conducted with a terrestrial laser scanner application [12]. In addition, spatial distribution and the identification of the parameters of the subsoil layers was performed. A numerical soil model, based on Mohr–Coulomb theory, was also taken into consideration. shear reduction method (SRM) was applied to determine the slope stability; the areas at risk of mass movement were then identified on the basis of the slope stability ratio.