Comprehensive Risk Analysis of Storm Surge Flood Based on WebGIS  

作　　者：佟大威 孙宜超 孙蕊蕊 王晓玲 周正印 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University [2]School of Environmental Science and Engineering,Tianjin University

出　　处：《Transactions of Tianjin University》2012年第3期194-200,共7页天津大学学报（英文版）

基　　金：the Science Fund for Creative Research Groups of National Natural Science Foundation of China (No. 51021004);National Key Technology R&D Program in the 12th Five-Year Plan of China (No. 2011BAB10B06);National Natural Science Foundation of China (No. 51179121)

摘　　要：The comprehensive risk analysis of storm surge flood is vital to the safety management of sea embank- ment, the scientific assessment of storm surge disaster and the improvement of emergent treatment in storm surge haz- ard. Based on the research of disaster-causing, disaster-pregnant and disaster-bearing factors, the influencing factors of storm surge risk are concluded to be flood natural risk, embankment position, embankment width and height. The membership degree of the factors of stoma surge risk is firstly determined by storm surge flood evolution based on WebGIS, and the comprehensive risk membership and risk grade of each influencing factor are obtained. Then the effects of a single factor on comprehensive risk and sensitivity analysis are discussed, and the storm surge flood risk map is obtained. Finally, the storm surge of Tianjin Binhai New Area is taken as a case. The results show that the in- fluencing degree of the factors on the comprehensive risk membership is in decreasing order of flood natural risk, em- bankment position, embankment width and height. The flood risk map of the case is drawn, which is useful to decrease losses caused by storm surge disaster.The comprehensive risk analysis of storm surge flood is vital to the safety management of sea embank- ment, the scientific assessment of storm surge disaster and the improvement of emergent treatment in storm surge haz- ard. Based on the research of disaster-causing, disaster-pregnant and disaster-bearing factors, the influencing factors of storm surge risk are concluded to be flood natural risk, embankment position, embankment width and height. The membership degree of the factors of storm surge risk is firstly determined by storm surge flood evolution based on WebGIS, and the comprehensive risk membership and risk grade of each influencing factor are obtained. Then the effects of a single factor on comprehensive risk and sensitivity analysis are discussed, and the storm surge flood risk map is obtained. Finally, the storm surge of Tianjin Binhai New Area is taken as a case. The results show that the in- fluencing degree of the factors on the comprehensive risk membership is in decreasing order of flood natural risk, em- bankment position, embankment width and height. The flood risk map of the case is drawn, which is useful to decrease losses caused by storm surge disaster.

关 键 词：storm surge comprehensive risk WEBGIS sensitivity analysis risk map 

分 类 号：TV122.1[水利工程—水文学及水资源]