Rock fall hazard: from expert opinion to quantitative evaluationReport as inadecuate

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* Corresponding author 1 LIRIGM - Laboratoire Interdisciplinaire de Recherche Impliquant la Géologie et la Mécanique

Abstract : A new method is proposed to estimate the failure probability of potentially unstable rock volumes, as a function of time 1. It is based on both geomechanical and morphodynamical approaches: the first one is aimed to classify the rock volumes according to their relative failure probability 2; the second one to estimate the mean expected rock fall number in the whole slope, for the considered period and for different volume classes. This number can be obtained from a rock fall inventory 3 or from the slope erosion rate. The method is applied to calcareous cliffs in the Grenoble area.

keyword : Natural hazards Rock fall Rock avalanche Erosion Natural hazards.

Author: Didier Hantz - Carine Dussauge-Peisser - Mathieu Jeannin - Jean-Marc Vengeon -



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