鐘 華 1，馬 婷 2，王旭瀅 3，嵇海祥 4

　　(1.南京水利科學研究院，江蘇 南京 210029;

　　2.諸暨市水利局，浙江 諸暨 311800;

　　3.上海勘測設計研究院有限公司，上海 200335;

　　4.水利部南京水利水文自動化研究所，江蘇 南京 210029)

　　摘 要：針對洪水風險圖系統開發中第三方商業化軟件采購成本較高的情況，借助開源軟件技術搭建有效的動態洪水風險圖系統，可降低系統開發成本。基于 GIS 平臺、數據庫技術和 B/S 架構，結合自主開發的水文水動力數值模型，搭建動態洪水風險圖系統。系統可通過洪水分析計算，對可能的超標準暴雨洪水導致的淹沒水深、流速大小及淹沒范圍等進行模擬預測，在線繪制洪水淹沒圖。以諸暨市浦陽江洪水風險圖管理與應用系統為應用實例，研發的動態洪水風險圖系統可實現各類洪水風險圖的自動繪制、風險預警等，在實際防汛中發揮作用，提高提升政府應急管理、防汛減災、避災轉移的決策能力。

　　關鍵詞：開源 GIS;數據庫;動態;洪水風險圖系統;B/S 架構;水文水動力模型

　　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