Abstract
The aim of this study is to shed light on a real stability problem within the region of Bcharreh located in North of Lebanon where roads have no protection against landslides. An attempt for landslide assessment that occurred in November 2016 is presented in order to analyse the different factors behind the landslide and find the trigger factor affecting the stability of the slope. The characterization of soil properties along the slope is done based on geotechnical investigation, and data collection. The first part of work consists of site inspection and geotechnical investigation followed by a series of laboratory tests to evaluate the mechanical properties constituting the slope, in addition to collection of topographical and hydrogeological data. The second part presents the numerical analysis where a finite element model simulating the slope conditions is generated using Plaxis 2D in order to reproduce the process of landslides, to assess slope stability and determine the overall factor of safety in both dry and wet conditions. The contribution of each causal factor in prompting soil movement is then demonstrated and explained.
Highlights
Landslides represent a major natural hazard which can cause significant damage, economic loss, and loss of life
According to landslide hazard distribution map in Lebanon prepared by the World Health Organization [8], Bcharreh district falls in a high landslide risk zone
This paper presents a case study of an active that has occurred in „Qnat‟ mountainous area located in Bsharreh district
Summary
Landslides represent a major natural hazard which can cause significant damage, economic loss, and loss of life. It becomes a source of concern for geotechnical engineers throughout the world. No investigation of landslides assessment was done before for this area except a study done by [9], but the study was general and more descriptive. This area was selected in an attempt to analyze the factors affecting the stability of the slope through data. Different major factors that control the stability of the slope will be analysed and the trigger factor is discussed
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