Study on optimal water distribution model of canal system for autumn irrigation in Hetao Irrigation Area based on SHAW model

被引：0

作者：

Shen L. ^{[1
,3
]}

Hu T. ^{[1
]}

Zhou S. ^{[1
]}

Fu G. ^{[2
]}

Huang J. ^{[1
]}

机构：

[1] State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan

[2] Inner Mongolia Hetao Irrigation District General Administration, Bayannaoer

[3] Hubei International Irrigation and Drainage Research and Training Center, Hubei Water Resources Research Institute, Wuhan

来源：

Shuili Xuebao/Journal of Hydraulic Engineering | 2020年 / 51卷 / 04期

关键词：

Autumn irrigation; Optimal water distribution of canal system; Water and salt transport process; Water transport loss;

D O I：

10.13243/j.cnki.slxb.20190630

中图分类号：

学科分类号：

摘要：

Autumn irrigation for soil moisture conservation and salt leaching in Hetao irrigation area is to meet the demands of water and salt for the next spring sowing crops. In view of the problems of strong dependence and low accuracy of medium and long-term prediction in traditional water distribution of canal system based on crop water demand prediction, a framework of optimal water delivery scheduling model without crop water requirement prediction is proposed in this paper. According to the demands of soil water and salt in early spring sowing stage, the SHAW model is embedded into optimal water distribution to determine the autumn water distribution plan. A case study on the water distribution plan of autumn irrigation in Yongji of Hetao irrigation area in 2016 shows that: comparing the traditional water distribution method based on water demand prediction, the water distribution plan obtained by new method can significantly improve the salt leaching effect without increasing amount of water diversion at the head of the canal and total water loss, so that the soil layer condition of 0~40cm gets more suitable for crops at the beginning of spring sowing. The superscalar of average salinity is reduced from more than 60% to less than 5%, and the fairness of water distribution is also improved. © 2020, China Water Power Press. All right reserved.

引用

页码：458 / 467

页数：9

共 19 条

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