基于枚举法和遗传算法的农田有压管道系统优化设计  

Optimal Design of Farmland Pressure Pipeline System Based on Enumeration Method and Genetic Algorithm

作　　者：曹风华 CAO Fenghua(Wenchen Street Agriculture,Forestry and Water Integrated Service Center,Liaocheng 252131,China)

机构地区：[1]温陈街道农林水综合服务中心,山东聊城252131

出　　处：《河南水利与南水北调》2022年第11期24-26,29,共4页Henan Water Resources & South-to-North Water Diversion

摘　　要：以某农田有压管道为研究对象,根据地区的实际情况对9个供水节点进行了编号,确定了各供水节点之间的关系和布置形式。同时基于枚举法和遗传算法,对比分析不同管网布置方案下的供水成本,对其进行优化,选取最优灌溉方案。研究表明,方案9的供水成本最小,为0.314 2元/m^(3);方案6的供水成本最大,为0.515 3元/m^(3),所以选取方案9时有最小灌溉成本,为最优管网方案,管网总长度为2 721 m。供水成本与遗传代数呈负相关关系,随遗传代数的增大,供水成本逐渐减小。当遗传单数大于20时,供水成本变化趋势趋于平稳,逐渐趋于一个定值。当管网总长度为2 620 m时,供水成本最大,当管网长度为2 721时,供水成本最小,此时为最优农田有压管道灌溉方案。Taking the pressure pipeline of a farmland as the research object, 9 water supply nodes are numbered according to the actual conditions of the region, and the relationship and layout of each node are determined. At the same time, based on enumeration method and genetic algorithm, water supply cost under different pipe network layout is analyzed and optimized, and the optimal irrigation scheme is selected. The study shows that the water supply cost of scheme 9 is the smallest, which is 0.3 142 Yuan/m^(3), and that of scheme 6 is the largest,which is 0.515 3 yuan/m^(3). Therefore, Scheme 9 has the minimum irrigation cost, which is the optimal pipeline network scheme. The total length of the pipeline network is 2721 m. The cost of water supply has a negative correlation with the genetic algebra. With the increase of genetic algebra, the cost of water supply decreases gradually. When the genetic odd number is more than 20, the trend of water supply cost tends to be stable, and tends to a fixed value gradually. When the total length of pipe network is 2 620 m, the water supply cost is the biggest,and when the length of pipe network is 2 721, the water supply cost is the smallest.

关 键 词：有压管道 节水灌溉 供水成本 

分 类 号：TV6[水利工程—水利水电工程]