Slope stability analysis constitutes a crucial component of the operational procedures involved in open-cast mining. A slope failure adjacent to an active mining site could give rise to severe societal, economic, and safety implications of a grave nature. It is widely recognized that multiple parameters, such as the type of minerals, orientation of joints, precipitation patterns, pore water pressure, cohesive properties, and the angle of internal friction exhibited by the rock masses, exert influence over the stability of a slope. Presently, the design of slopes primarily relies on empirical knowledge gained from practical field experience. The objective of this paper is to employ numerical modelling techniques to analyse a section of the slope characterized by a series of terraced benches and diverse layers of soil featuring varying properties. The numerical analysis is performed using FLAC (Fast Lagrangian Analysis of Continua), a software developed by Itasca International. This analysis aims to determine the Factor of Safety, Pore Pressure, Saturation, Stress, Strain Rate, Strain Increment, Velocity Vector, and Displacement Vector. Furthermore, the investigation examines the outcomes obtained during both dry and wet stages. The wet stage encompasses two infiltration scenarios, namely, a prolonged period of light rainfall lasting four months and an intense rainstorm lasting four days. The results also include a reduction in saturation and shear strain rate when the water is prevented from infiltrating the horizontal surfaces of the whole slope.

来源平台：INDIAN GEOTECHNICAL JOURNAL