International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 02 | Feb 2024
p-ISSN: 2395-0072
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Comparative Analysis of Slope Stability Methods in Geomechanical Numerical Modeling Monkam Ngameni Huguette Maeva, Haibing Cai, Manli Boukari School of Civil Engineering and Architecture Anhui University of Science and Technology, Huainan, China. -----------------------------------------------------------------------***--------------------------------------------------------------------Abstract: Slope stability analysis in geomechanical engineering is essential for infrastructure project safety and efficiency. To evaluate their efficacy, limits, and practicality in geomechanical numerical modeling, this study compares three popular numerical methods: Limit Equilibrium Method (LEM), Finite Element Method (FEM), and Discrete Element Method (DEM). The standard LEM simplifies the complex slope stability problem into a static equilibrium scenario using defined surfaces as the failure mechanism. However, the FEM discretizes the slope into finite elements to capture localized failure and material nonlinearity. Another method, the DEM, represents the slope as a discrete block assembly with block interactions and material discontinuities. Case studies and benchmarks cover homogeneous and heterogeneous slope situations in the comparative analysis. Slope geometry, material properties, pore water pressure, and loading conditions are evaluated. The comparison study shows each method's pros and cons. Simple and able to forecast slope stability, the LEM may miss complex failure processes and stress redistribution effects. FEM models nonlinear behavior and progressive failure well but may struggle with large-scale concerns. Although computationally intensive, the DEM captures block interactions and discontinuities, making it suited for extensively fractured or jointed slope scenarios. The comparative analysis illustrates that the choice of a slope stability analysis method has a substantial influence on the outcomes. Method C is a reliable technique for describing complex shapes and producing reliable results. When choosing, it is crucial to take into account both the geological conditions and the computational resources that are accessible. These findings emphasize the significance of comprehending the capabilities and constraints of geomechanical numerical modeling approaches.
Keywords: Slope Stability, Geomechanica, Numerical Modeling 1.0 INTRODUCTION Slope stability in geomechanical numerical modeling is important in engineering and environmental applications. Limit equilibrium approaches, finite element analysis, and other element methods can assess slope stability (Murali et al., 2018). To evaluate geomechanical numerical modeling slope stability analysis methods, several studies have examined their precision and reliability (Chen et al., 2016). This study highlighted the pros and cons of each technique, such as its ability to model complex geometries or computer resource requirements (Sun et al., 2019). In geomechanical numerical modeling, slope stability analysis requires selecting appropriate input parameters and understanding results in real-world engineering applications (Duncan et al., 2005). In numerical geomechanics modeling, slope stability approaches must be compared. Slope stability analysis requires a detailed understanding of the various methods (Yan et al., 2021). Slope stability analysis uses many methodologies. Traditional limit equilibrium methods like Bishop's and Simplified Bishop's methods and analytical approaches like FEM and DEM are examples (Yan et al., 2021; Baudet, 2010). Previous studies show that these methods are widely used to analyse slope stability (Yan et al., 2021). Each method has advantages, drawbacks, and challenges. Bishop's method is used to assess slope stability with diverse geometries and soil compositions because it's simple and effective (Baudet, 2010). FEM and DEM methods are more precise for slope stability analysis but require more computational resources and knowledge (Yan et al., 2021; Baudet, 2010). This paper examines slope stability methods in geomechanics numerical modeling. To do this, the literature study will first survey slope stability analysis approaches. Xuan et al. (2018) included various methods, including limit equilibrium and finite element analysis. The review will also examine Zhang et al.'s (2019) slope stability analysis research. The last discussion will focus on Li et al.'s (2020) pros, disadvantages, and challenges of different approaches. Slope stability in geomechanical numerical modeling is crucial to assessing slope safety and stability in engineering applications. Limit equilibrium, finite element, and discrete element methods have been used to achieve this goal (Zhang et al., 2019; Gui et al., 2018; Wang et al., 2017). These methods have been extensively studied for their pros and downsides. Limit equilibrium techniques work well for simple slope geometries but may not capture complex failure causes. Finite element methods can handle complex geometries but require a lot of processing power (Liu et al., 2016; Chen et al., 2014).
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