宁夏银北灌区井渠结合灌溉三维数值模拟与分析  

Simulation and Analysis of Well-canal Combined Irrigation Patterns in Yinbei Irrigation District

作　　者：尹大凯[1] 胡和平[1] 惠士博[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《灌溉排水学报》2003年第1期53-57,共5页Journal of Irrigation and Drainage

基　　金：国家重点基础科学研究发展规划项目 ( 19990 43 60 )

摘　　要：为实现银北灌区水资源联合调度 ,减少引黄水量 ,充分利用地下水的目标 ,对选定典型区的地表水、地下水联合调度进行模拟 ,对井渠结合灌溉模式和运作方式进行了计算。通过三维的数值模拟计算发现 ,在规划渠系利用条件下 ,可以根据当地实际情况 ,在来水保证率低的春灌或冬灌期实施井灌 ,以控制地下水位 ,减少土壤返盐 ,也可以对部分农田采用集中井灌的方式 ,以提高用水效率。A three dimension mathematical model was developed for simulating well canal combined irrigation patterns with the help of Visual MODFLOW. In order to use the limited water resources efficiently and reasonably, the conjunctive use of surface water and groundwater was simulated and analyzed in a case study area. The results show that under planning conditions, groundwater may be used as main irrigation water resource in spring or winter when the Yellow River water is not enough to be diverted in time, or a part of the irrigation district may be irrigated with groundwater around the year for utilizing local water resources more efficiently.

关 键 词：地下水模拟 联合调度 灌溉模式 银北灌区 MODFLOW 

分 类 号：S274.2[农业科学—农业水土工程]