ABSTRACT
Landslide Hazard Zonation is a method proposed to evaluate risk where there is the potential for landslides. Many factors affecting the occurrence of landslides are analysed. Qazvin-Rasht-Anzali railway track is one of the areas susceptible to landslides in Iran, and in the area several landslides were recorded. Landslides caused damage or disturbance to villages, farmlands and railway, exacerbation of the superficial erosion and consequently the rate of transportation of sediments. The geology of the area is controlled by two main factors: the lithology and the bedding. Slope angle is a major factor influencing the development of landslides. As the slope angle increases, the weight and consequently the volume of material affected per unit area will also increases. Landslides are the outcome of a number of main and subsidiary factors and one single factor can rarely be identified as causing this phenomenon.
