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Browsing by Author "BOUAZDIA , Maroua"

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    Géotechnical Modeling Of Slope Stability : case study and risk assement “open trench excavation in BEKKARIA”
    (Université Echahid Cheikh Larbi Tebessi – Tébessa, 2025) BOUAZDIA , Maroua
    Abstract This study investigates slope stability challenges in a geologically complex mountainous terrain where a phosphate transport railway is being constructed. Combining advanced numerical modeling (PLAXIS 2D/2024) with comprehensive field investigations, the research evaluates stability across three distinct geological facies: unstable diapiric gypsum-clay formations requiring reinforcement, competent limestone strata demonstrating inherent stability, and plastic clays showing critical susceptibility to failure. Key findings reveal rainfall infiltration reduces safety factors by 25-40% in weak formations, while dynamic train loads induce progressive deformations (<5 mm) in plastic clays. The study establishes optimal slope designs (65° benched excavations) and proposes targeted mitigation measures including drainage systems and soil nailing. By developing a validated modeling framework for multilithological terrains, this research provides both practical solutions for the current project and a methodological template for similar infrastructure developments in geologically challenging environments. The results emphasize the necessity of lithology-specific engineering approaches and real-time monitoring to ensure long-term slope stability Keywords: Slope stability analysis; Geotechnical modeling; Diapiric formations; PLAXIS 2D simulation; Rainfall-induced landslides; Mining infrastructure.