Modélisation numérique de l’équilibre des pentes rocheuses : cas de la carrière ENOF de djebel Gustar (Sétif-Algerie-).

Abstract

The level of technical expertise achieved in the field of mining engineering, allows the adoption of strategies for the effective exploitation of open quarries while taking into account the balance of discontinuous rocky slopes. However, the geo-mechanical characteristics of the geological structures, the nature and the competence of the rock matrix, control the modes of rupture in these mining works. The aim of the study is to identify the different modes of rupture likely to develop in the ENOF career of Djebel Gustar by a multi-step approach. This methodology is essentially based on numerical modeling, statistical, geometric, empirical and geomechanical methods, as well as on the complementary use of and rockfall software. The results of this study demonstrate that the stability of the site is poor, and identify the different mechanisms of instability under various conditions. They also allow the implementation of a valid site operation scheme while ensuring the stability of rocky slopes and the safety of the site.