摘要
农业水资源高效利用是节约用水的重要内容,灌区节水是农业节水的重点领域,开展灌区渠系水流演进研究,对灌区精准调水具有重要意义。以漳河灌区二干渠为研究对象,基于马斯京根水流演进基本原理,针对具有多个分水口渠道的水流变化特点,开展了渠道水流演进的“先演后合”和“先合后演”方法对比研究。应用结果表明,“先演后合”得到的渠首流量均值更接近实际情况。本研究不仅可用于推求渠首配水过程和模拟各断面水位过程,而且可为灌区开展渠系水量的科学精准调度提供决策依据。
The efficient utilization of agricultural water resources is an important part of water conservation,and water conservation in irrigated areas is the key field of agricultural water conservation.Taking the second main canal of the Zhanghe Irrigation District as the research object,this paper conducts a comparative study of the“merge after calculation”and“merge and then calculate”approaches to channel flow evolution based on Maskinghen method,focusing on the flow change characteristics with multi-division.The results show that the average discharge of the canal head calculated by the two methods is more accurate,but the flow process simulated by the method of“merge and then calculate”is closer to the measured process.This study can not only be used to deduce the water distribution process of canal head and simulate the water level process of each section,but also provide a decision-making basis for the scientific and accurate scheduling of water amount in irrigation areas.
作者
莫明珠
刘明忠
董祚
艾学山
陈森林
MO Ming-zhu;LIU Ming-zhong;DONG Zuo;AI Xue-shan;CHEN Sen-lin(Guangxi Research Institute of Water Resources, Nanning 530023, China;Zhanghe Engineering Administration Bureau of Hubei, Jingmen 448156, Hubei Province, China;State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)
出处
《中国农村水利水电》
北大核心
2020年第2期56-62,共7页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51779177,51479141)
湖北省水利重点科研项目(HBSLKY201916)。
关键词
渠道
多分水口
水流演进
先演后合
先合后演
channel
multi-division
flow evolution
merge after calculation
calculation after merge
作者简介
莫明珠(1993-),女,助理工程师,主要从事水资源规划与管理研究,E-mail:837796346@qq.com;通讯作者:艾学山(1972-),男,副教授,主要从事水资源规划与管理研究,E-mail:xsai@whu.edu.cn。
