Vulnerability and Urban Failures at the Gates of Algiers. For what Appeasement?

BOUSTIL, Fériel (2026) Vulnerability and Urban Failures at the Gates of Algiers. For what Appeasement? Doctoral thesis, Faculté des Sciences et de la technologie.

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Abstract

The integration of agricultural villages in the metropolis of Algiers has been carried out in varying ways since independence in 1962 to date (Bessaoud, 1999) depending on the nature of the state’s development policy and the urban planning model on which it was based (Fontaine, 1990). The phenomenon of peri-urban development corresponds to the conjunction of phenomena of demographic concentration and urban loosening (Bouleux, 1998). (Lévy, 2013) thus “any urbanized territory contiguous to the city is the potential object, of an annexation by the city. ”Indeed, the peripheral space is for the city a space waiting to occupy at the rate of its expansion needs (Duvernoy, 2002). The study area is characterized by strong urbanization with environmental and social consequences that are often disastrous and difficult to manage (Imache, 2010). This former arm of the sea, behind the hills of the Sahel, had been gradually backfilled by the alluvial deposits of rivers descending from the Atlas blidéen (Cote, 2014); with 50,000 inhabitants and limiting physical and geographical characteristics, is not immune to its consequences. The spatial development of this marshy area is characterized by the occupation of land which is sometimes No ædificandi. Hence the physical vulnerability of peri-urban sectors to the risk of flooding, these measures should reverse the current trend of proliferation of anarchic urbanization, rehabilitate and “upgrade” these neighborhoods, and design tools for urban planning, both in their technical and regulatory aspects, capable of preserving the banks of wadis or the areas of natural spreading of floods, from any urbanization without prior protection ((Léone F et Al, 2010). temporal vulnerabilities invite a reflection on a better articulation between flood risk and territory. (Laganier, 2006) intends the territorialization of risk in the sense of “better taking into account of this risk in urban planning documents and regional planning ”. This contribution aims to address three fundamental aspects: the drivers of peri-urbanization, spatial change and the site’s vulnerabilit

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