Report/Poster (After Call)

FZJ-2018-02465

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hydromechanical modelling of slope stability at Dollendorfer Hardt, Germany, using the Local- Factor-of-Safety concept

Moradi, S. (Corresponding author)FZJ* ; Huisman, J. A.FZJ* ; Class, H. ; Vereecken, H.FZJ*

2018

Please use a persistent id in citations: http://hdl.handle.net/2128/18205

Report No.: EGU2018-14249

Abstract: Rainfall-induced landslides are one of the most important natural hazards that endanger human life and infrastructureall around the world. Different model concepts have been developed to consider the effect of soil hydrologyon the mechanical balance and to predict the stability of hillslopes. One state-of-the-art modelling approach forcoupled hydromechanical slope stability analysis is based on the Mohr-Coulomb concept that allows evaluating thestability at each point within a hillslope using the so-called Local-Factor-of-Safety (LFS) approach. However, theLFS approach has so far mainly been used to analyze in silico experiments with relatively simple slope geometry.Therefore, this study aims to apply the LFS concept to a slope with complex morphology and spatially distributedmaterial properties that are expected to have a strong influence on flow orientation, water content, stress distribution,and slope stability. Our study site is located at Dollendorfer Hardt, Germany, and has been investigated in arange of previous studies. The slope geometry was obtained from a high resolution digital elevation model, andthe subsurface layering was derived from geophysical site characterization. The results of the hydromechanicalsimulations will be compared to available soil water content monitoring data obtained using a wireless sensor networkand time-lapse electrical resistivity tomography. In a final step, slope stability will be evaluated for severalhypothetical rainfall scenarios to determine conditions for potential slope movement.

Keyword(s): Geosciences (2nd)

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 255 - Terrestrial Systems: From Observation to Prediction (POF3-255) (POF3-255)

Appears in the scientific report 2018

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Database coverage:

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