Assessment of rock fall risk in Zafar town of Kermanshah using Conefall technique

Rockfalls are one of the most serious natural hazards in terms of victims and economic impact, besides their interaction with many other natural phenomena. rockfall, defined as the movement of a mass of rock, debris or earth down a slope rockfall hazard and landslide risk analyses can be carried out using several methods. The aim of this paper is to study and evaluate the potential of rockfalls and landslides and zoning these areas. In this method, in accordance with the geometric dimensions, slop, the movement of the rockfall, their expansion, finally its effect on the study area have been tested. Ddigital data also Cone fall and Arc GIS software utilized to identify landslides in the study area. Rockfall risk area was calculated for slopes and two critical angles and the results were presented as a map of high fall risk zones. The results showing that the total area of rockfall is equal to 2467357 square meters and 520686 square meters of residential areas are under the risks of rockfall.