滞洪区二维洪水演进及洪灾风险分析

An Analysis of 2-D Flood Routing and Flood Damage Risk in Flood Detention Area

建立了二维洪水演进的隐式差分模型，用以进行君山滞洪区的洪水模拟计算，在地理信息系统（ＡＲＣ／ＩＮＦＯ）支持下，根据计算结果给出了不同时刻洪水淹没图、洪水演进不同时刻的水深分布图、流速分布图及洪灾风险图。此结果可为当地防洪部门提供科学依据。

A 2-D implicit differential mathematical model for flood routing was established in simulating calculation of flood in Junshan flood detention area. With the support of ARC/INFO,such maps as flood inunated map, water depth distribution map of flood routing at different times, velocity distribution map and flood damage risk map were worked out on the basis of calculation results. These results can provide the secientific base for the local flood prevention departments.