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Volume 11
Issue 2
10.3390/geosciences11020073
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Article

The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability

by
Panagiotis Sitarenios
1,* and
Francesca Casini
2
1
School of Energy, Construction and Environment, Coventry University, Coventry CV1 5FB, UK
2
Dipartimento di Ingegneria Civile e Ingegneria Informatica (DICII), Università degli Studi di Roma “Tor Vergata”, 00133 Roma, Italy
*
Author to whom correspondence should be addressed.
Geosciences 2021, 11(2), 73; https://doi.org/10.3390/geosciences11020073
Submission received: 28 December 2020 / Revised: 22 January 2021 / Accepted: 25 January 2021 / Published: 8 February 2021
(This article belongs to the Special Issue Natural and Artificial Unsaturated Soil Slopes)
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Abstract

This paper presents a three-dimensional slope stability limit equilibrium solution for translational planar failure modes. The proposed solution uses Bishop’s average skeleton stress combined with the Mohr–Coulomb failure criterion to describe soil strength evolution under unsaturated conditions while its formulation ensures a natural and smooth transition from the unsaturated to the saturated regime and vice versa. The proposed analytical solution is evaluated by comparing its predictions with the results of the Ruedlingen slope failure experiment. The comparison suggests that, despite its relative simplicity, the analytical solution can capture the experimentally observed behaviour well and highlights the importance of considering lateral resistance together with a realistic interplay between mechanical parameters (cohesion) and hydraulic (pore water pressure) conditions.
Keywords: unsaturated slope; Ruedlingen field experiment; lateral resistance; limit equilibrium solution unsaturated slope; Ruedlingen field experiment; lateral resistance; limit equilibrium solution

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MDPI and ACS Style

Sitarenios, P.; Casini, F. The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability. Geosciences 2021, 11, 73. https://doi.org/10.3390/geosciences11020073

AMA Style

Sitarenios P, Casini F. The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability. Geosciences. 2021; 11(2):73. https://doi.org/10.3390/geosciences11020073

Chicago/Turabian Style

Sitarenios, Panagiotis, and Francesca Casini. 2021. "The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability" Geosciences 11, no. 2: 73. https://doi.org/10.3390/geosciences11020073

APA Style

Sitarenios, P., & Casini, F. (2021). The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability. Geosciences, 11(2), 73. https://doi.org/10.3390/geosciences11020073

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