摘要
针对平原感潮河网的水文和水力学特性,结合甬江流域实际,建立了平原河网水利计算混合模型,采用Preissmann四点隐式格式,合理选定权重系数,并运用河网最优节点编码法的3级解法进行求解;利用2000年桑美台风暴雨洪水对模型进行验证计算,结果表明模型是可靠适用的。考虑不同重现期暴雨和潮位的组合情况,采用研究建立的河网水利计算模型对规划防洪工程全面实施后甬江流域河网节点水位进行了合理计算。
Based on hydrological and hydraulic characteristics of plain tidal river network, a hybrid hydrocalculation model for plain river network is established according to the actual conditions of the Yongjiang River Basin. By using 4-point Preissmann implicit scheme and reasonably selecting weight coefficient, the solution is obtained by use of the 3-level solution method of optimal node coding and verified by SAOMEI typhoon rain in 2000. It shows that the model is reliable and applicable. Considering storm of different recurrence interval in combination with tidal level of different recurrence interval, the hydro-calculation model for fiver network is used for reasonably calculating the node water level of fiver network in the Yong, jiang River Basin on the basis of the complete implement of flood control projects in planning
出处
《灾害学》
CSCD
2009年第2期41-45,共5页
Journal of Catastrophology
基金
宁波市2004年水利科技重点项目"甬江流域洪水复核及城市防洪能力评估"部分研究成果
关键词
平原感潮河网
水利计算
混合模型
权重系数
最优节点编码法
三级解法
甬江流域
plain tidal river network
hydro-calculation
hybrid model
weight coefficient
optimal node coding
three-level solution
the Yongjiang River Basin
