Abstract
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).
Highlights
Heba Nabil Abdel HamedEnvironmental Planning Department, Faculty of Urban and Regional Planning, Cairo University, Lecturer, Cairo University Campus, Gamaa Street, Giza, Egypt
The Application of a Proposed Risk Assessment Approach on Rock Failure Hazard on Manshiet Nasser District
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)
Summary
Environmental Planning Department, Faculty of Urban and Regional Planning, Cairo University, Lecturer, Cairo University Campus, Gamaa Street, Giza, Egypt. Rock failure is one of the most geomorphological hazards that cause considerable damages in different regions every year. 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. Another research tacksequences or expected losses resulting from interac- led the assessment of risk by proposing an approach tions between natural or human induced hazards and to determine hazard assessment of inputs and outputs, n vulnerable conditions (UN/ISDR, 2004). Rock failure but it did not specify the vulnerability assessment of inyeskaisrscadhnraadwimannsaftlroyosmaentahthndlheyiaaerstzeveuarucerrttlavhndalieesenrhwfaidaanbcziciontlaloifudtrryddissreefettvahhccreaatotrtoatecrclmcksaopfufaarnoselyeorlvmpiaitdohrneiuoecdnsdotluliorcafeccysnseuisednreadrgserselcnir,adhicssteeekohs. _ Anthropogenic activities and land use: the explosives, used for quarry activities, cause cracks, fractures and faults activation, which in turn increase the rate of block movement, and the rock excavation process in these quarries that creates unstable vertical cliffs (Khaled et al, 2008)
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