A quantitative assessment model for property risk caused by single landslide

Property risk assessment for single landslide is the foundation of prevention and mitigation measures. Since we can not evaluate the vulnerability of elements at risk quantitatively, property risk assessment of single landslide becomes hard to achieve accuracy. In light of the typical elements at risk, a quantitative assessment model for property risk caused by single landslide is presented, which defined by probability of slope fall, reliability of structure and the value of elements at risk. Avoiding the vulnerability evaluation, assesses the property risk from a new point of view. Through the research, it is shown that the model can reflect the influence of landslide factors exactly, and provides a new way to assess property risk quantitatively for single landslide. A new conception of safety zone that based on this model is introduced. For each one of elements at risk, the impact area of single landslide can be divided into dangerous zone, relatively dangerous zone and safety zone.