大型输水渠道系统优化设计研究

Optimal design for large open channel system

本文在过去研究的有基础上，对大型输水渠道系统的优化设计进行了探索．提出了考虑建筑物水头损失和投资关系进入系统优化过程的数学模型，采用离散微分动态规划（ＤＤＤＰ）法进行计算和求解，能够迅速而准确地获得在渠系工程量或投资最小时的渠道纵横断面设计参数及各建筑物的最优化水头分配．实例研究的结果表明，采用本文方法可获得准确的设计参数和明显的经济效益．

On the basis of the previous studies the authors developed a new approach tooptimal design for large scale open channel system. The discreted differential dynamic planning(DDDP) method has been used to solve the mathematical model foroptimization of the system,in which the relation between head loss of the hydraulicstructure and investment has been considered. The optimal parameters of the transverse aam cross sections of the channel system as well as the optimal head losses allocation for the least investiment can be deduced.