Development of the scaled boundary finite element method for image-based slope stability analysis
This paper presents a numerical technique for geotechnical slope stability analysis, integrating digital image meshing with the scaled boundary finite element method, allowing site conditions such as complex stratigraphies, surface and internal geometry evolution to be simulated in a robust and stra...
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| Veröffentlicht in: | Computers and geotechnics 2022-03, Vol.143, p.104586, Article 104586 |
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| container_title | Computers and geotechnics |
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| creator | Wijesinghe, Dakshith Ruvin Dyson, Ashley You, Greg Khandelwal, Manoj Song, Chongmin Ooi, Ean Tat |
| description | This paper presents a numerical technique for geotechnical slope stability analysis, integrating digital image meshing with the scaled boundary finite element method, allowing site conditions such as complex stratigraphies, surface and internal geometry evolution to be simulated in a robust and straightforward procedure. The quadtree decomposition technique is used to automatically discretise the geometry directly from digital images using pixel information to accurately capture boundaries with fine-scale elements. The process allows complex numerical models to be generated from cross-section images of slopes, capitalising on the combination of the scaled boundary finite element method and quadtree meshing. The spatial distribution of the soil material properties can be represented by the colour of each pixel. A mapping technique is developed to integrate these parameters into the computational mesh. The feasibility of the proposed method is presented through case study simulations of an active large Australian open-pit mine, considering various aspects of complex features such as geometry, stratigraphy and material behaviour. |
| doi_str_mv | 10.1016/j.compgeo.2021.104586 |
| format | Article |
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The quadtree decomposition technique is used to automatically discretise the geometry directly from digital images using pixel information to accurately capture boundaries with fine-scale elements. The process allows complex numerical models to be generated from cross-section images of slopes, capitalising on the combination of the scaled boundary finite element method and quadtree meshing. The spatial distribution of the soil material properties can be represented by the colour of each pixel. A mapping technique is developed to integrate these parameters into the computational mesh. 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| ispartof | Computers and geotechnics, 2022-03, Vol.143, p.104586, Article 104586 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Colour Computational grids Computer applications Digital imaging Feasibility studies Finite element analysis Finite element method Geometry Image processing Image-based analysis Material properties Mathematical models Meshing Numerical models Open pit mining Pixels Quadtree mesh Robustness (mathematics) Scaled boundary finite element method Slope stability Soil properties Spatial distribution Spatial variation Stability analysis Stratigraphy |
| title | Development of the scaled boundary finite element method for image-based slope stability analysis |
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