Abstract

The study area is located in the central Alborz zone, which is located in the provinces of Tehran and Mazandaran in terms of divisions. The purpose of this study was to determine the status of mass movements in the slopes and in the along Haraz freeway. Surveying satellite images and aerial photos and determining the landslide points of the old landscapes were also carried out. Then, by collecting information layers in the environment of the GIS, you considered all the effective parameters. Using LNRF method different variable analysis led to the creation of landslide zonation map. The results of the analysis and on the collation of information layers led to the preparation of a zonation map of landslide risk and finally determined that the high risk areas had a Dr (compression ratio) of 3.47 and Qs (quality) of 1.01. This situation indicates the high sensitivity of the route to the mass movement phenomenon in the mountainous axes and in loose and fracturing formations and its frequency in the south western and mostly free-run parts of the road is greater than the risk and the necessity of forecasting methods it requires stabilization and implementation of consolidation measures.

Keywords: Central alborz; Mass movements; LNRF method; Haraz freeway