Landslides and related hazards

Three-dimensional slope stability analysis by slice methods

Keizō Ugai

Feb 24, 2026 | 25 citations

Abstract

Abstract

In order to analyze three-dimensional (3-D) slope stability, new 3-D slice methods are proposed by extending Fellenius method, the simplified Bishop method, the simplified Janbu method and Spencer’s method to three dimensions. Calculations are carried out to analyze 3-D effects on simple slopes that have a finite failure width. Applicability of these methods to practical cases and results of small-scale model tests are discussed.

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Keizō Ugai

first | Gunma University

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@article{Ugai2026Three,
  title = {Three-dimensional slope stability analysis by slice methods},
  author = {Keizō Ugai},
  year = {2026},
  doi = {10.1201/9781003763291-102},
  url = {https://doi.org/10.1201/9781003763291-102}
}

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