新安江模型在梁子湖入湖洪水计算中的应用

Application of Xin'anjiang model in computing inflow flood of Liangzi Lake

湖泊的入湖洪水计算是湖泊开发、管理与保护的基础性工作。应用三水源新安江模型原理建立了梁子湖入湖洪水计算模型,取得了较好的模拟、计算效果。研究实践表明,将遗传算法与Rosenbrock方法相结合所构建的混合遗传算法,能够以较快的速度收敛于新安江模型参数的全局最优解。计算结果表明,同一频率下,梁子湖设计洪水以2005年型最不利。研究成果为梁子湖开发利用与保护工作奠定了基础,也为其他湖泊入湖洪水的计算提供了借鉴。

The lake inflow flood computation is a basic work for the development, management and protection of lakes. A flood calculation model of Liangzi Lake is established by using the theory of three - source Xin^njiang model, and satisfactory simula- tion and computation effects are obtained. The study indicates that the hybrid genetic algorithm combined by genetic algorithm and Rosenbrock method can converge to the global optimization parameters of Xin^njiang model quickly. The calculation results show that under the same frequency, the type of flood in 2005 is the most unfavorable design flood for Liangzi Lake. The research results provide foundation for exploiting and protecting Liangzi Lake and reference for flood calculation of other lakes.