钟 华 1，马 婷 2，王旭滢 3，嵇海祥 4

　　(1.南京水利科学研究院，江苏 南京 210029;

　　2.诸暨市水利局，浙江 诸暨 311800;

　　3.上海勘测设计研究院有限公司，上海 200335;

　　4.水利部南京水利水文自动化研究所，江苏 南京 210029)

　　摘 要：针对洪水风险图系统开发中第三方商业化软件采购成本较高的情况，借助开源软件技术搭建有效的动态洪水风险图系统，可降低系统开发成本。基于 GIS 平台、数据库技术和 B/S 架构，结合自主开发的水文水动力数值模型，搭建动态洪水风险图系统。系统可通过洪水分析计算，对可能的超标准暴雨洪水导致的淹没水深、流速大小及淹没范围等进行模拟预测，在线绘制洪水淹没图。以诸暨市浦阳江洪水风险图管理与应用系统为应用实例，研发的动态洪水风险图系统可实现各类洪水风险图的自动绘制、风险预警等，在实际防汛中发挥作用，提高提升政府应急管理、防汛减灾、避灾转移的决策能力。

　　关键词：开源 GIS;数据库;动态;洪水风险图系统;B/S 架构;水文水动力模型

　　Research on dynamic flood risk map system based on open-source GIS and database

　　ZHONG Hua 1，MA Ting 2，WANG Xuying 3，JI Haixiang 4

　　(1.Nanjing Hydraulic Research Institute，Nanjing 210029，China;

　　2.Zhuji Water Bureau，Zhuji 311800，China;

　　3.Shanghai Investigation and Design Research Institute，Shanghai 200335，China;

　　4.Nanjing Research Institute of Hydrology and Water Conservation Automation，Ministry of Water Resources，Nanjing 210029，China)

　　Abstract：Due to the high cost of commercial software in the development of flood risk map system, the cost of system development can be reduced by building an effective dynamic flood risk map system with open-source software. Based on GIS platform, database technology and B/S architecture, a dynamic flood risk map system is built, which is combined with self-developed hydrological and hydrodynamic numerical model. Through flood analysis and calculation, the system can simulate and predict the inundation depth, flow velocity and inundation area caused by possible huge rainstorm and flood, and can draw flood inundation map online. Taking the flood risk map management and application system of Puyang River in Zhuji City as an example, the results show that the system can realize automatic drawing of various flood maps, risk early warning, etc. It plays an important role in flood control practice and improves the decision-making ability of the government in emergency management, disaster prevention and reduction.

　　Key words：open-source GIS;database;dynamic;flood risk map system;B/S structure;hydrological and hydrodynamic model