灌区骨干渠道节水配水优化研究

Optimization of Water-saving and Water Distribution in Backbone Channels of Irrigation areas Areas

水资源短缺是实现经济快速发展必须面对的问题。为了协调好各个支渠配水流量,减少整个渠系的输水量损失,针对贵州省金沙县花滩河片区的灌区内的实际状况,优化灌区骨干渠道的用水配水量。结果表明,夏秋灌刚开始4月上旬的配水量和实际需水量均不足10万m^(3),配水量为7.5万m^(3),大于2.4万3 m实际需水量。4月中旬配水量最高,达到60万m^(3),实际需水量为58万m^(3),可以满足需求。在完成配水优化之后,上游段支渠的配水量几乎高于支渠实际的需水量。1、2、3号的支渠配水量和支渠实际需水量相关性得到了显著提升,拟合系数分别提升了0.87、0.83、0.58。配水优化后取得了显著成效,大大提高了预测的准确性,优化技术的广泛应用对提高水资源利用效率有积极作用。

Water scarcity is a problem that must be faced to achieve rapid economic development.In order to coordinate the water distributionflow of various branch channels and reduce the water loss of the entire canal system,and based on the actual situation in the Huatanhe area of Jinsha County,Guizhou Province,the water distribution of the main channels in the irrigation area is optimized.The results showed that the water allocation and actual demand for summer and autumn irrigation in early April were both less than 100000 m^(3),with a water allocation of 75000 m^(3),which was greater than the actual demand of 24000 m^(3).The highest water allocation was in mid April,reaching 600000 m^(3),and the actual water demand was 580000 m^(3),which can meet the demand.After completing the water distribution optimization,the water distribution of the upstream branch canal is almost always higher than the actual water demand of the branch canal.The correlation between the water distribution and actual water demand of the 1st,2nd,and 3rd branch canals has been significantly improved,withfitting coefficients increasing by 0.87,0.83,and 0.58,respectively.Significant results have been achieved after optimizing water distribution,greatly improving prediction accuracy.The widespread application of optimization techniques has a positive effect on improving water resource utilization efficiency.