Elaboration d’une cartographie par ArcGis du glissement de terrain de la ville de Mila : Evènement du 07/08/2020

Abstract

As a landslide poses a threat to the safety of people and property, it can be defined as the downward ovement of a slope of a mass of soil along a fracture surface that initiates in a slope under the effect of gravity and the failure surface is that along which the mass of soil slides.The success of projects and town planning is a ondition for studying natural risks in order to solve problems after natural phenomena.The limatological ramework of the city of Mila shows that the city is characterized by a temperate climate of more than 600 mm of precipitation and a very dense hydrographic network which influences the instability of the soil.This work was carried out as part of the preparation of our end of study thesis with a view to obtaining an academic Master's degree. This work aims to give an overview of the landslide in Mila after the event of August 07, 2020 and to identify areas at risk in the event of a new earthquake. In this work, we propose a cartographic methodology for areas exposed to landslide hazard, based on satellite, topographic, geological and climatic data. The laboration of cartography by Arc Gis 10.3 allowed us to superimpose and analyze the factors that can cause the landslide, such as lithology, slope, hydrographic network, density of habitation and subsequently elaboration a mapping of the landslide hazard in the city of Mila. These could constitute a basic document for planners and decision-makers in the future development of the