【摘要】 【目的】基于NSGA-Ⅱ算法对灌区配水渠道轮灌分组进行优化调控，实现灌区高效配水。【方法】以下级渠道流量和轮灌分组数为决策变量，以总配水时间短、同一轮灌组内最上游渠道与最下游渠道间距小、同一轮灌组内各渠道配水时间差最小为目标，考虑轮期约束、出水口状态约束、渠道过流能力约束、水量平衡约束，建立多目标配水优化模型，利用NSGA-Ⅱ算法对模型进行求解。【结果】对于簸箕李灌区的石皮东支渠，模型将斗渠划分为9个轮灌组，模型的配水流量和配水总时长均满足约束要求；模型尽可能地将相邻的渠道划分到一个轮灌组并同时启闭，方便管理人员操作闸门。【结论】本文建立的灌区配水模型能够实现流量大、短历时、配水工作量少，可为灌区配水工作提供技术支撑。更多还原

【Abstract】 【Objective】Optimization of water distribution in irrigation districts is a way to improve water use efficiency and water resource management. This paper proposes a method to optimize water distribution in irrigation canals. 【Method】The flow rate in the canals at the lower end and the number of rotational groups are taken as the decision variables. The objectives of the optimization are to minimize the total water distribution duration, the distance between the upstream and downstream canals in the same group, and the difference in water distribution duration in each canal in the same rotational group. The optimization considers the constraints of time, outlet state,canal overflow capacity, and water balance. The model is applied to the Shipi East branch canal in Bojili irrigation regions, and the optimization is solved using the NSGA-II algorithm by dividing the lower-end canals into nine rotation irrigation groups. 【Result】Dividing the adjacent canals into one round grouting group as possible as it could, and opening and closing them simultaneously to facilitate the management, the water distribution flow rate and total water distribution time calculated by the model meet the operational requirements.【Conclusion】The optimization model proposed in this paper can distribute water between canals to achieve high flow rate, short duration and less workload. It can be used to help improve water management in irrigation districts.更多还原