摘要
以泾惠渠灌区为研究对象,基于灌区地下水观测数据,运用FEFLOW建立泾惠渠灌区地下水三维模拟模型。在满足模拟规范要求的精度要求下,模拟11种不同节水水平情景,研究了地下水位对不同影响因素条件下的响应情况。得到地下水位对本次研究的三种主要影响因素条件下的响应情况为:斗口以下灌溉水利用系数>灌溉定额>干支渠水有效利用系数。模拟最终得到灌区最优渠井节水水平配置:干支渠水有效利用系数0.71,斗口及以下灌溉水有效利用系数0.90。在生产实际中应优先考虑提高斗口以下灌溉水有效利用系数,并以此为依据确定灌区渠系防渗衬砌标准。
Taking Jinghui canal irrigation district as the research object,based on the groundwater observation data of the irrigation district,FEFLOW was used to establish the groundwater three-dimensional simulation model of Jinghui Canal irrigation district.Under the premise of accuracy,11 scenarios with different water saving levels were simulated to study the response of groundwater level to different influencing factors.The response of groundwater level to the three main influencing factors in this study was obtained and arranged from large to small as follows:the water utilization coefficient of the downstream of branch canal,irrigation norm,the utilization coefficient of the main and branch canal system.Based on the simulation,the optimal allocation is obtained as that the water use coefficient of the main and branch canal system is 0.71,and the water utilization coefficient of the downstream of branch canal is 0.90.In the actual production,enhancing the irrigation water utilization coefficient of the downstream of branch canal should be given priority and to establish the canal lining standards for seepage control based on this.
作者
刘菁扬
粟晓玲
刘俊民
赵永刚
沈长越
LIU Jing-yang;SU Xiao-ling;LIU Jun-min;ZHAO Yong-gang;SHEN Chang-yue(College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, Shaanxi Province, China;Liaoning Municipal Engineering Design & Research Institute Co., Ltd., Shenyang 110006, China;Shanxi Jinghuiqu Administration Bureau, Sanyuan 713800, Shaanxi Province, China;Liaoning Water Conservancy and Hydropower Survey and Design Institute Co. LTD, Shenyang 110006, China)
出处
《节水灌溉》
北大核心
2020年第9期33-38,共6页
Water Saving Irrigation
基金
水利公益性行业科研专项(201301016)
国家科技支撑计划(2012BAD08B01)。
关键词
渠井结合灌区
FEFLOW
渠系水有效利用系数
地下水数值模拟
canal-well combined irrigation district
FEFLOW
canal system water use coefficient
groundwater numerical simulation
