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为分析第二松花江下游洪水过程对河水-地下水交换的影响,以第二松花江下游德惠河段2016年10月15日~11月16日经历的一次涨洪—退洪过程为例,根据热示踪法,运用VFLUX2.0.0程序计算了该河段河水—地下水交换强度,探讨了洪水前和洪水过程中研究区河水—地下水交换模式及交换强度的变化。结果表明,洪水过程改变了河水—地下水交换模式,使交换强度增加。研究结果为该流域地下水资源的评价与管理、地表水与地下水的综合利用提供理论依据。
In order to analyze the influence of flood process on the river-groundwater exchange in the downstream of the second Songhua River, taking a flood discharge-de-flood process experienced by Dehui section of the second Songhua River from October 15 to November 16, 2016 as an example, According to the thermal trace method, the VFLUX2.0.0 program was used to calculate the river-groundwater exchange intensities and the changes of river-groundwater exchange patterns and exchange intensities in the study area before and during the flood were discussed. The results show that the flood process changed the river-groundwater exchange pattern and increased the exchange intensity. The results provide a theoretical basis for the evaluation and management of groundwater resources and the comprehensive utilization of surface water and groundwater in the basin.