Utilization of Flood Simulation Technique in Urban Flood Warning - A Case Study on Fuzhou

Abstract

Vulnerability of urban receptors in flood prevention is rising during the rapid urbanization, and emergency response strategies were introduced to strengthen the capacity of urban flood prevention and flood disaster response. Emergency plan for flood control, which is considered as one of the most important emergency response strategies, was studied in this thesis, and flood simulation technique was applied in urban flood warning and emergency response to improve the practicability and operability of the Emergency plan. Referring to achievements of flood warning at home and abroad, a set of proposed flood warning standard that involves early flood warning standard and flood warning standard of inundated area was made and introduced to Fuzhou city in this study. Several calculation schemes, involving flood scenarios with high possibility or the most dangerous situations, were designed for the case study, and then the calculation schemes were simulated by using the numerical model, and study of flood warning and emergency response was carried out on the basis of flood risk analysis results; and proper flood risk mitigation and emergency disposal measures were designed in the emergency plan. Practical application has also proved that flood simulation technique can improve the efficiency of urban stormwater Emergency Management, and flood simulation technique is proved to be a useful measure of flood hazard loss reduction and disasters cost control.