杭嘉湖地区洪水演进水动力学模型研究

Numerical Solution of Flood Routing in Hangjiahu Region

杭嘉湖地区地势低洼，河网密布，圩洼众多，洪涝水组成复杂，洪水调度十分困难。根据杭嘉湖地区的下垫面条件，利用加拿大一维水动力模型（１－ＤＭ）对杭嘉湖地区河网洪水演进进行了探讨。经验证，１－ＤＭ计算结果满意，有较好的使用价值。

Hangjiahu Region Locates in the south region of Taihu Basin,and consists of low lying lands,paddy fields surrounded with dikes and a densely river networks.Serious damages were caused by flood and water logging in recent years.The models for Hangjiahu river network runoff yield and routing of flood are developed by the Canadian one dimension hydrodynamic model(1 DM) according to the principles of Saint Venant equations.Based on the historical hydrological data in the past two years,the model is rated and can be used to study the regulation rules of key projects and pump stations in the Hangjiahu Region.It is concluded that the Canadian 1 DM can be used to solve the problems related to flood proofing and water logging control in Hangjiahu Region.