中文摘要：

为了能更好地为城市供水规划提供指导,以丽水市为例,从图论的角度针对丽水市多水源供水的特点,建立了多水源供水优化配置模型。首先,将研究区域按高程进行分区,依据图论理论构建了供水系统概化模型;其次,以年运行费用最小为目标函数,建立了优化配置模型。计算方法采用遗传算法,对各供水分区进行供水量的配置计算,计算了现状年和两个规划水平年下的配置方案。为了验证模型的合理性,将现状配置方案进行对比,结果表明,本配置方案在运行费用上较现有方案可节省16.72%,该模型有一定的推广与应用价值。

英文摘要：

Abstract：In order to provide better guidance for urban water supply planning, this study takes Lishui City as an example and establishes the optimal allocation model of multi-source water supply for Lishui from the perspec- tive of graph theory. Firstly, it partitions study areas according to elevation and builds up the generalized model of the water system based on graph theory. Secondly, taking the minimum annual operation cost as objective function, it establishes the optimal allocation model. By way of genetic algorithm, it then conducts configurable calculation of water supply for each water partition and puts forward the configuration scheme of the current year and two planning level years. By comparing the current configuration scheme with the optimal scheme, it verifies the reasonableness. Results show that the optimal one can save 16.72% in operating costs compared with the ex- isting scheme with more laooularization and aoolication values.