摘要
根据开封市柳园口灌区的水文地质条件,运用地下水数值模拟软件Visual Modflow,建立了地下水三维非稳定流模型.用1986-1998年的资料进行率定,1999-2003年的资料进行验证,结果表明模型的模拟结果与实际情况较吻合,模型可以对该灌区的地下水动态进行模拟和预测.拟定不同的地下水开采量、不同的地表引黄水分配以及不同的作物种植结构等方案,对灌区地下水系统对各方案的响应进行模拟.结果表明,与种植结构的调整及控制地下水开采量相比,灌区采用井渠联合应用模式可以更加有效地减少潜水蒸发和控制适宜的地下水位埋深.模拟分析结果为灌区合理开采地下水及提高灌区水利用率提供了科学的水管理依据.
The hydrogeological conditions of Liuyuankou Irrigation System(LIS) in Kaifeng were analyzed;and a 3D transient surface-groundwater interaction model was developed using Visual Modflow.The model was calibrated against observed groundwater level data from 1986 to 1998 and verified against data from 1999 to 2003.The results show that the model performance is acceptable and can be used to simulate and forecast the groundwater dynamic of LIS.Three groundwater management strategies were tested;and the results show that the proposed conjunctive use strategy decreases groundwater evaporation losses and maintains reasonable groundwater depth.The findings provide scientific basis for rational exploiting groundwater and improving water efficiency in LIS.
出处
《武汉大学学报(工学版)》
CAS
CSCD
北大核心
2010年第1期25-29,共5页
Engineering Journal of Wuhan University
基金
国家自然科学基金项目(编号:50879060
50839002
50809021)
关键词
VisualModflow
柳园口灌区
井渠联合应用
地下水位
潜水蒸发
Visual Modflow Liuyuankou Irrigation System conjunctive use of surface and groundwater groundwater depth groundwater evaporation