依据大坳灌区水文地质、气象、灌溉、开采、地下水动态监测等方面的资料,在掌握灌区地下水水位动态变化机理及动态特征的基础上,建立了区域的水文地质概念模型。运用地下水数值模拟软件Groundwater Model System建立灌区地下水水流模型...依据大坳灌区水文地质、气象、灌溉、开采、地下水动态监测等方面的资料,在掌握灌区地下水水位动态变化机理及动态特征的基础上,建立了区域的水文地质概念模型。运用地下水数值模拟软件Groundwater Model System建立灌区地下水水流模型,对灌区地下水水位进行模拟。模拟结果表明:地下水位的计算值和实测值吻合较好,该模型可以用来对该灌区新渠系建设后的地下水位进行预测。模型预测结果为:灌区新渠投入运行多年后地下水水位大部分上升值小于0.2 m,最大上升值0.49 m,对区域地下水位总体影响不大,不会引起相应的生态环境问题。展开更多
Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater o...Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater observation wells were constructed in experimental plot of the Daxia irrigated area to carry out the experiment of the effect of irrigation on groundwater dynamic change in this research. The results showed that the groundwater stage dynarnic change rule of spring and seedling irri- gation stage in the typical plot was fit to the hydrological geology condition of grade- I terrace of Huangshui river valley. On the whole, lateral canal water direction formed a line effect. The No. 1 and No. 2 observation well were the closest to the lateral canal, which received more supplies, and the water level was the highest; the No, 3 observation well took the second place; The No. 4 and No. 5 observation well accepted least supplies, and the water level was the lowest. The rangeability of water table of spring irrigation period was significantly higher than that of seedling irrigation period, this is mainly due to the difference value of intake water volume and drainage water volume of spring irrigation phase was significantly higher than the seedling irrigation phase.展开更多
文摘依据大坳灌区水文地质、气象、灌溉、开采、地下水动态监测等方面的资料,在掌握灌区地下水水位动态变化机理及动态特征的基础上,建立了区域的水文地质概念模型。运用地下水数值模拟软件Groundwater Model System建立灌区地下水水流模型,对灌区地下水水位进行模拟。模拟结果表明:地下水位的计算值和实测值吻合较好,该模型可以用来对该灌区新渠系建设后的地下水位进行预测。模型预测结果为:灌区新渠投入运行多年后地下水水位大部分上升值小于0.2 m,最大上升值0.49 m,对区域地下水位总体影响不大,不会引起相应的生态环境问题。
基金Supported by Water Consumption Coefficient Research in Irrigated Area in the Yellow River Areas in Qinghai Province(QX2012-019)
文摘Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater observation wells were constructed in experimental plot of the Daxia irrigated area to carry out the experiment of the effect of irrigation on groundwater dynamic change in this research. The results showed that the groundwater stage dynarnic change rule of spring and seedling irri- gation stage in the typical plot was fit to the hydrological geology condition of grade- I terrace of Huangshui river valley. On the whole, lateral canal water direction formed a line effect. The No. 1 and No. 2 observation well were the closest to the lateral canal, which received more supplies, and the water level was the highest; the No, 3 observation well took the second place; The No. 4 and No. 5 observation well accepted least supplies, and the water level was the lowest. The rangeability of water table of spring irrigation period was significantly higher than that of seedling irrigation period, this is mainly due to the difference value of intake water volume and drainage water volume of spring irrigation phase was significantly higher than the seedling irrigation phase.
