地下水和地面水二维不恒定流藕合模型在南水北调地下水预测中的应用

The application of two-dimensional and unsteady model combined surface water with ground water in South-North water Transfer Project

研究洪泛区发生较大规模洪水对地下水的影响,以往采用一维的理论公式或经验公式法估算地下水入渗量,再采用水均衡法计算地下水位变化的方法,应用于大面积串流洪水区域已不太准确,而且不能反映地下水位区域内的分布情况。该文提出了一种加入渗流子模型的地面水二维不恒定流与地下水二维不恒定流模型相藕合的方法预测地下水位。

Research on the effect to ground water from relatively large-scale flood which takes place in flooded area.Anciently we adopted one-dimensional theoretical or experiential expressions to estimate influent＇seepage, then adopted water-equilibrium to account the water table variation. But this means already was not very right to great-area overbank flow region. Further more, it couldn＇t reflect the distribution in water table. This text bring us one means to forecast water table which combines two-dimensional and unsteady surface water joined child-model seepage with two-dimensional and unsteady ground water model.