The Application of a Proposed Risk Assessment Approach on Rock Failure Hazard on Manshiet Nasser District
Rock failure is one of the most geomorphological hazards that cause considerable damages in different regions every year. To effectively mitigate this hazard, new methodologies are needed to develop a better understanding of rock failure assessment and management. In recent years, risk analysis and assessment have become an important tool in addressing uncertainty. However, the all-embracing perspective of the notion of risk is not an easy task to undertake since it requires data availability at different scales and a multidisciplinary point of view. The research aims to analyse the factors causing the occurrence of rock failure by analysing hazard and vulnerability factors using a proposed risk assessment approach to be applied on Mansheit Nasser district. The research uses a quantitative analytical risk assessment methodology. The methodology used to assess the risk of rock failure in Mansheit Nasser district is to estimate the hazard (H) and the vulnerability (V). The risk is calculated by using equations mentioned in the research and the arc GIS programme to prepare maps. The equation is used to standardise the value of risk factors and unify their weights. The research concludes that the rock failure risk index (RFRI) determines the most vulnerable areas to rock failure in Manshiet Nasser to estimate the elements at risk (E).