Back Analysis Of The Vaiont Slide Using A Multi-block
Sliding Model
Author(s)
C. Stamatopoulos & S. Aneroussis
Abstract
A multi-block sliding system model and associated computer code has been
developed to model the displacement of sliding geo-masses. This model is a
useful tool, especially when displacements are very large and computer codes
based on the Finite Element Method cannot be applied. The paper applies the
model to predict the response of the well-documented Vaiont landslide, which
occurred on 9 October 1963. The predicted deformation of the slide and back-estimated
soil strength agreed reasonably well with the measured. In addition the
computed and observed time duration of motion and peak slide velocity are in
agreement.
Keywords: Vaiont slide, multi-block model, residual soil strength.
1 Introduction
The conventional sliding-block model has shortcomings in back-analyzing slides
when displacement is large. The reason is that the change on geometry of the
sliding mass, that greatly affects the displacement, is not modeled. Ambraseys
and Srbulov [1] proposed a two-body sliding system that models the
displacement of slides. Stamatopoulos et al. [2] generalized the two-body sliding
system. Sarma and Chlimintzas [3] proposed a sliding system consisting of n
bodies. Similarly to the Sarma [4] stability analysis method, internal sub-planes
are formed at the locations where the external slip surface changes inclination.
Energy loss at these sub-planes is adequately modeled. As shear displacement
occurs, mass is transferred between consecutive blocks.
This model is a useful tool, especially when displacements are very large and
computer codes based on the Finite Element Method cannot be applied. The
purpose of this paper is to investigate the ability of the model to predict the
Keywords
Vaiont slide, multi-block model, residual soil strength.
Related Book
Other papers in this volume
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