Zoning of Natural Disaster in Decreases in Roads with Emphasis of Digital Elevation Model Case Study: Chaloos Road(Karag Dam to Kandovan Channel)

Subject Areas : Geopolitic

منیژه  Ghahroodi ¹ (ندارد)

Received: 2015-01-13 Accepted : 2015-01-13 Published : 2006-07-23

Keywords: Chaloos Road, DEM, Natural Disaster, Kandovan Channel, SRTM,

Abstract :

Elevation models, a numerical expression of the continuous changes in ups anddowns, are capable of demonstrating roads at their actual positions, and facilitate thepossibility of mountain roads management. These models are also capable ofcomputing the potential of natural risks by means of satellite pictures, and can proveuseful in decreasing road accidents.For the present study, the author selected part of Chaloos Road, from Karaj toKandovan, where numerous accidents have occurred. As this part of the road issituated within the drainage basin of Karaj (Amir Kabir) Dam, the study drew on theelevation model (DEM) of this basin, which was extracted from satellite (SRTM)pictures. From this model, hillshade layers were extracted, and layers of adjustmentcurve, drainage system, gradient, gradient direction, and route of the largest gradientwere prepared. Moreover, this part of the road was extracted from a map at a scale of1:50000, and was placed in the above set of layers after being benchmarked. Followinganalyses, the potential of natural risks on this road was assessed.