作　　者： (刘波）; (刘福胜）; (刘栋梁）; (张鹏）; (李云峰）;

机构地区： 山东农业大学水利土木工程学院,山东泰安271018

出　　处： 《节水灌溉》 2017年第8期92-95,100,共5页

摘　　要： 针对当前农田灌溉管道工程设计规划难以达到最优、农业灌溉供水成本过高等问题,从用水户角度出发,以管长、管径、水泵扬程等因素为变量,灌溉供水成本最低为目标函数,建立了农田有压管道系统非线性优化模型。结合设计人员经验和工程实际,根据单点供水原则,采用枚举法对管网布置进行优化。在此基础上采用遗传算法对管径进行优化,得到各管网布置方案下的管径组合及水泵扬程,最后选择出供水成本最低的方案作为最优设计方案。编写了C++和Matlab程序,并进行了工程实例验证。结果表明,方法可快速有效地确定出农田有压管道系统整体优化方案,在满足农田灌溉要求的同时,降低供水成本,切实保护用水户的利益。 Due to the problem that it is difficult to reach the optimal design of current farmland irrigation pipeline project and the cost of agricultural irrigation water supply is too high, the nonlinear optimization model of farmland pressure pipe system is established in terms of water users by taking pipeline length, pipe diameter, pump head as variables, the minimal water supply cost and the annual cost as objective function. According to the principle of single point of water supply, the enumeration method is adopted for pipe network layout optimization combined with the designers＂ experience and the practical project. On the basis of this, genetic algorithm is used to optimize the pipe diameter, the most economical pipe diameter combination and the pump head are obtained. Finally, the minimal water supply cost scheme is selected as the optimal design scheme. The C＋＋ and Matlab programs are written and verified by engineering examples. The results show that this method can determine the overall optimization scheme of farmland pressurized piping system quickly and effectively, and meet the requirements of farmland irrigation while reducing the water supply cost and effectively protecting the interests of water users.

关 键 词： 农田有压管道系统 优化模型 枚举法 遗传算法