Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Version 1 : Received: 4 January 2021 / Approved: 5 January 2021 / Online: 5 January 2021 (13:20:58 CET)

A peer-reviewed article of this Preprint also exists.

Sitarenios, P.; Casini, F. The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability. Geosciences 2021, 11, 73. Sitarenios, P.; Casini, F. The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability. Geosciences 2021, 11, 73.

Journal reference: Geosciences 2021, 11, 73
DOI: 10.3390/geosciences11020073

Abstract

The 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 [1]. The comparison suggests that despite its relative simplicity the analytical solution can capture well the experimentally observed behaviour and highlights the importance of lateral resistance consideration together with a realistic interplay between mechanical parameters (cohesion) and hydraulic (pore water pressure) conditions.

Subject Areas

unsaturated slope; Ruedlingen field experiment; lateral resistance; limit equilibrium solution

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