NURBS Surface-Altering Optimization for Identifying Critical Slip Surfaces in 3D Slopes

Ma, Terence; Mafi, Ramin; Cami, Brigid; Javankhoshdel, Sina; Gandomi, Amir H.

doi:10.1061/(asce)gm.1943-5622.0002517

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…MMO approach was used for 3D slope slip surface analysis 20 . In this study, MMO approach was used for susceptible zone identification.…”

Section: Three-dimensional Modellingmentioning

confidence: 99%

Mine Active Internal Dump Susceptible Zone Identification using MMO Technique

Chand,

Koner

2024

jmmf

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In open-cast mines, a dump stability analysis is tedious for engineers. In the past, dump slope disasters have caused a loss of human resources and mining machinery. Sometimes, the machinery is stuck in a debris flow. Therefore, Susceptible Zone Identification (SZI) and its treatment are essential for the mining industry. This study aims to identify multiple failure zones in a large dump using a Multi Model Optimization (MMO) technique. Realistic 3D modelling is essential for accurate stability evaluation. Researchers have used 2D numerical modelling for dump slope stability analysis in many studies. However, the geometry of mine dumps is irregular because of unplanned Overburden (OB) material deposition. If the real 3D geometry of the dump is not considered, the slope stability results may confound researchers. Therefore, this study aimed to analyze the stability of the Sonepur Bazari mine dump with multiple failure zones using realistic 3D modelling. The Limit Equilibrium Method (LEM) and Finite Difference Method (FDM) were employed for slope stability analysis. This study investigated different critical zones in the entire dump. The advantage of this combined approach is that large internal and external dump failure zones can be quickly identified, and decisions can be made for mitigation.

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“…MMO approach was used for 3D slope slip surface analysis 20 . In this study, MMO approach was used for susceptible zone identification.…”

Section: Three-dimensional Modellingmentioning

confidence: 99%

Mine Active Internal Dump Susceptible Zone Identification using MMO Technique

Chand,

Koner

2024

jmmf

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“…Still further, metaheuristic optimization algorithms such as Particle Swarm Optimization (PSO) and Cuckoo Search have been used to determine the minimum FS of slip surfaces in slopes. These have received widespread acceptance in slope stability research [1][2][3][4][5][6][7][8][9][10] due to their ability to simulate natural processes to converge to a minimum FS slip surface relatively quickly.…”

Section: Introductionmentioning

confidence: 99%

“…These shapes are easy to define as inputs into the above methods but suffer from lack of accuracy and ability to represent the true critical slip surface in a slope because they are inflexible. Recently, a Surface Altering (SA) optimization has been proposed for 3D slopes [5], which can approximate the minimum FS result from the metaheuristic search of these primitive surfaces (e.g. the minimum FS ellipsoid) into a plan-rectangular array of spline points.…”

Section: Introductionmentioning

confidence: 99%

“…The SA approach can technically approximate any slip surface obtained from the metaheuristic search, and locally minimizes the FS. However, the approximation suggested by [5] can cause undesirable changes to the geometry of the slip surface and can increase the FS obtained from the approximated surface before the local optimization is performed. Furthermore, the minimum FS ellipsoid or sphere in a slope may not be in the correct location, due to the inflexibility of the shape used during the metaheuristic search.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of Spline Slip Surfaces Using Metaheuristic Search in LEM

Ma¹,

Cami²,

Javankhoshdel³

et al. 2023

Proceedings of the TMIC 2022 Slope Stability Conference (TMIC 2022)

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The search for the critical slip surface on a slope is an optimization problem whereby the factor of safety is minimized over a set of parameters which define the shape of the slip surface. In limit equilibrium slope stability analysis, traditional methods for searching for the critical slip surface include grid search and auto-refine search. More recently, metaheuristic optimization methods such as Particle Swarm and Cuckoo Search, among other variations, have been used to search for critical slip surfaces. These simulate natural processes that search the solution space for a minimum solution for various optimization problems encountered in a vast range of disciplines. Typically, the parameters of spheres or ellipsoids which cut the ground topography are varied to create different slip surfaces. The parameters of cutting planes and wedges can also be varied to create multi-planar slip surfaces using the same metaheuristic techniques. However, critical slip surfaces are not always spherical, ellipsoidal, or planar in nature. This paper introduces a novel method which employs the use of three-dimensional spline surfaces in a metaheuristic search to find the critical slip surface in a slope. By varying the parameters which define the location, size and curvature of the spline, the critical slip surface can be found. The proposed formulation of parameters is shown to perform better than the parameters which define the preceding shapes due to the superior flexibility of a spline surface in its curvature.

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A solution for evaluating stability and sliding direction of 3D earthquake landslides

Sun,

Liang

2024

Bull Eng Geol Environ

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NURBS Surface-Altering Optimization for Identifying Critical Slip Surfaces in 3D Slopes

Cited by 12 publications

References 52 publications

Mine Active Internal Dump Susceptible Zone Identification using MMO Technique

Mine Active Internal Dump Susceptible Zone Identification using MMO Technique

Optimization of Spline Slip Surfaces Using Metaheuristic Search in LEM

A solution for evaluating stability and sliding direction of 3D earthquake landslides

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