基于WebGIS的洪泽湖地区动态洪涝管理信息系统

Management Information System of Dynamic Flood in Hongze Lake Area Based on WebGIS

洪泽湖承泄淮河上中游15.8万km^2的洪水,周边地区地形以平原洼地为主,常受洪涝灾害影响。为了降低区域洪涝风险、减少洪灾损失,针对外河洪水、区域洪水及暴雨内涝3类风险源构建了洪水演进模型,在此基础上基于WebGIS开发了B/S结构的动态洪涝管理信息系统,采用动态图层技术生成了动态洪水风险图。实现了对规划与模拟工况下的雨水情信息、静态与动态洪水风险信息和受灾损失信息的综合管理以及二维洪水演进过程的动态显示,有助于加强区域洪涝管控与制定避险转移方案。

Discharging a flood of 158 000 km^2 from the upper and middle reaches of Huaihe River,Hongze Lake is mainly surrounded by plain and depression which are subject to flood disasters.In the aim of reducing regional flood risk and alleviate flood losses,a B/S-structured management information system of dynamic flood is developed based on WebGIS by constructing flood routing models for three types of risk source including external river flood,regional flood and rainstorm waterlogging.On this basis,the dynamic flood risk map is generated by using dynamic layer.With this system,the rainfall and water information,static and dynamic flood risk information,as well as disaster loss information under planning and simulated conditions can be managed comprehensively,and the 2-D flood routing process can be displayed dynamically,which is conducive to strengthening regional flood control and establishing evacuation schemes.