Multidisciplinary evaluation of geological, geotechnical, geomechanical, and hydrogeological parameters for assessing slope stability in the Aures Mountain Quarry

The study delves into characterizing the mechanical parameters of the Tahar Louchene aggregate quarry unit in Ain Touta municipality, Batna province, Algeria. This investigation is crucial to address recurring instabilities commonly encountered in open-cast mines. Our approach adopts a comprehensive methodology integrating geotechnical, geomechanical, and numerical analyses, aiming to provide a thorough assessment of fractured rock mass behavior. Our methodology begins with detailed geological surveys aimed at optimal drilling site selection. Geomechanical analysis follows, focusing on fracturing and evaluating rock mass quality, complemented by geotechnical investigations featuring in-situ testing. To gather representative samples, we extracted eighteen cylindrical cores (102 mm × 204 mm) from various benches using a mechanical coring drill. These cores underwent rigorous physical characterization, geochemical analysis, and mechanical testing. Furthermore, 3D FEM numerical modeling was applied to comprehensively assess rock edge stability. The outcomes of our study unveil the presence of four distinct discontinuity sets within the primary formations, with particular emphasis on fault families of geological significance influencing deposit configuration. These fault structures provide valuable insights into stress history and tectonic evolution that directly impact the stability of the quarry. Moreover, our analysis identified various failure types, notably exacerbated by blasting practices that reduce safety factor values, highlighting the critical need for improved safety protocols. Our approach not only contributes to enhancing mining efficiency and productivity but also prioritizes the safety of equipment and personnel in open-cast mining operations across Algeria.

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Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).