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本文根据间歇性河流河道充水和停水过程周期性重复出现的水文特征,建立了河道两侧区域地下水运动的一维非稳定流模型,提出了把流量边界条件与水位边界条件相互转换来求解模型的一种方法。最后应用上述模型分析西北某内陆河下游间歇性输水条件下河道两侧地下水位恢复状况,为输水生态效应的定量评价提供了理论基础。
In this paper, a one-dimensional unsteady flow model of groundwater movement on both sides of the river is established according to the periodic recurring hydrological characteristics of intermittent river waterflooding and water stopping. The flow boundary conditions and water boundary conditions are transformed to solve A method of the model. Finally, the above model is applied to analyze the recovery of groundwater table on both sides of the river under intermittent water conveyance in the lower reaches of an inland river in the northwest of China, which provides a theoretical basis for the quantitative evaluation of the ecological effects of water conveyance.