摘要
基于汉江与长江两江洪水演进特点,建立了两江洪水演进数学模型。将计算河段分为4段,即汉江下游皇庄至汉江河口、长江螺山到汉江口、汉江汇合口到汉口水文断面以及东荆河,对汉江与长江汇合点,采用水力学中的汇流计算方法。采用实测资料对模型进行率定与验证,计算结果与实测资料吻合较好,表明本模型能较好地反映长江与汉江两江真实的物理过程,模型有较好的实用价值,可为该区域防洪调度及决策提供参考依据。
According to the flood routing characteristics of the Haniiang River and Yangtze River, a coupling mathematical model is presented to simulate the complicated flood routing of the two rivers. In the process of establishing the model, the finite volume method is adopted in the discretization of control equations, and the upwind scheme is used to deal with convection items. And the Yangtze River, the Hanjiang River and the Dongjing Channel are simulated as river networks. Calculation results can suit the measured data which also prove the high accuracy in the simulation of flow process.
出处
《中国农村水利水电》
北大核心
2008年第6期32-34,共3页
China Rural Water and Hydropower
基金
国家重大基础研究计划"973"项目(2003CB415203)
国家自然科学基金(50579054)
关键词
耦合数学模型
洪水演进
汉江
长江
东荆河
coupling mathematical model
flood routing
the Hanjiang River
the Yangtze River
the Dongjing Channel
