Author(s): Yu Chen, Peng Zhi Lin
Linked Author(s): Yu Chen
Keywords: SPA, VFS, flood risk assessment, dam
Abstract: Flood is considered to be one of the most widely distributed natural disasters to life and property in the world. In recent decades, continuously increasing flood damages and losses remain at high level. Dam break caused by flood is an important dam safety problem. Therefore, dam flood risk assessment is an essential analytical step in reducing dam-break flood damages and losses. Efforts to reduce the flood risk require appropriate dam flood risk assessment method. The flood risk can be expressed as a function and a product of hazard and vulnerability. There is no unique assessment procedure for flood disaster. Thus, the comprehensive risk assessment that takes into account the hazard and vulnerability is gaining more and more attention in the field of flood risk management. On the basis stated, this paper proposes a comprehensive risk assessment way based on set pair analysis (SPA) and variable fuzzy sets (VFS) theory (namely SPA-VFS for short) to assess the dam flood risk. The practical application demonstrates that the flood disaster risk assessment model based on SPA-VFS is visual, simple and general, and its result is reasonable and its computation precision is high. Thus, it has bright prospects of application for comprehensive flood risk assessment, and moreover has potential to be applicable to comprehensive risk assessment of other natural disasters
Year: 2017