Mohammad Reza Servati; Mohammad Mahdi Hosseinzadeh; Saeed Khezri; Aadel Mansouri
Volume 17, Issue 68 , February 2008, , Pages 25-32
Abstract
Mass movements zoning is one of the methods that can help to identify critical areas in terms of slope stability and to use the zoning map obtained in sustainable development planning (Karam, 2002, p. 25). The Sanandaj-Dehgolan route is considered as one of the main routes and of highest traffic in the ...
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Mass movements zoning is one of the methods that can help to identify critical areas in terms of slope stability and to use the zoning map obtained in sustainable development planning (Karam, 2002, p. 25). The Sanandaj-Dehgolan route is considered as one of the main routes and of highest traffic in the Kurdistan province, whose transportation system in the mountainous area is threatened by mass movements. This road in the mountainous section has an unsuitable situation due to high slope of hillsides and high altitude of the area as well as the inappropriate location of the road and the consequent unsustainability of the slopes. The present study aims to determine the effective factors and elements in creating these movements using the Analytic Hierarchy Process (AHP) and, based on the effect of each of these factors and elements, weigh them, and ultimately map the zoning of points sensitive to movements, and this zoning map is based on a combination of hypsometric layers, slope, slope direction, vegetation, soil type, lithology, distance from fault, distance from the road, distance from the village, drainage network density, temperature, precipitation, as well as land units and land use. Accordingly, the range was divided into four risk classes. The map was divided into four classes including very high (8.7 km2), high (28.9 km2), average (41.3 km2) and low (6.5 km2) areas of risk.
