The Conversion of Anisotropic Materials from 3D to 2D in Limit Equilibrium

DOI

10.2991/978-94-6463-258-3_26How to use a DOI?

Abstract

The consideration of anisotropic strength in limit equilibrium has become popular among practitioners in the field of slope stability. Rock masses exhibit failure planes in various directions which cannot be ignored in the analysis. The consideration of anisotropy in limit equilibrium by varying the shear strength directionally has been accomplished in slope stability software such as Slide2 and Slide3. The typical approach compares the angle of the sliding surface to the angle of the anisotropic plane, and depending on the proximity, determines whether the joint strength, bedding strength, or some interpolation of the two, is utilized. Although analysis in 3D is recommended, the computation of factor of safety over a series of simplified 2D sections is commonly adopted as an additional verification step. The conversion of a 3D anisotropic strength model, which can be obtained based on field data, into an equivalent 2D representation can be confusing because the section analysis in 2D may not always be aligned with the direction of anisotropy in 3D. In this paper, a recommendation is made to consider the 3D anisotropy fully in the 2D analysis. An alternative method is provided to convert 3D anisotropy into an approximated 2D model. The numerical results of an example with the proposed methods are compared.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Terence Ma
AU  - Brigid Cami
AU  - Sina Javankhoshdel
AU  - Brent Corkum
PY  - 2023
DA  - 2023/11/08
TI  - The Conversion of Anisotropic Materials from 3D to 2D in Limit Equilibrium
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 247
EP  - 256
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_26
DO  - 10.2991/978-94-6463-258-3_26
ID  - Ma2023
ER  -