[en] In this work, we explored a novel approach to integrate both geo-environmental and
soil geomechanical parameters in a landslide susceptibility model. A total of 179 shallow to
deep landslides were identified using Google Earth images and field observations. Moreover, soil
geomechanical properties of 11 representative soil samples were analyzed. The relationship between
soil properties was evaluated using the Pearson correlation coe cient and geotechnical diagrams.
Membership values were assigned to each soil property class, using the fuzzy membership method.
The information value method allowed computing the weight value of geo-environmental factor
classes. From the soil geomechanical membership values and the geo-environmental factor weights,
three landslide predisposition models were produced, two separate models and one combined
model. The results of the soil testing allowed classifying the soils in the study area as highly plastic
clays, with high water content, swelling, and shrinkage potential. Some geo-environmental factor
classes revealed their landslide prediction ability by displaying high weight values. While the model
with only soil properties tended to underrate unstable and stable areas, the model combining soil
properties and geo-environmental factors allowed a more precise identification of stability conditions.
The geo-environmental factors model and the model combining geo-environmental factors and soil
properties displayed predictive powers of 80 and 93%, respectively. It can be concluded that the
spatial analysis of soil geomechanical properties can play a major role in the detection of landslide
prone areas, which is of great interest for site selection and planning with respect to sustainable
development at Mount Oku.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Love Djukem, Wamba Danny
Braun, Anika
Ludovic Wouatong, Armand Sylvain
Guedjeo, Christian
Dohmen, Katrin
Wotchoko, Pierre
Fernandez-Steeger, Tomas M.
Havenith, Hans-Balder ; Université de Liège - ULiège > Département de géologie > Géologie de l'environnement
Language :
English
Title :
Effect of Soil Geomechanical Properties and Geo-Environmental Factors on Landslide Predisposition at Mount Oku, Cameroon
Publication date :
September 2020
Journal title :
International Journal of Environmental Research and Public Health
ISSN :
1660-4601
eISSN :
1661-7827
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Basel, Switzerland
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