怀洪新河对两岸地下水补排规律分析

Analysis on Law of Supply and Drainage of Groundwater from Huaihong River to its Banks

河流与两岸地下水的补排关系,取决于河水位与地下水位的对比。土壤质地决定土壤渗透性能,在土质确定情况下,补给与排泄量与垂直水流的过水面积及水力坡度有关;过水面积取决于河道自身与蓄水特性;水力坡度则与河流控制运用情况、来水用水情况、河岸地面高程及地下水开发利用等情况有关。抬高河道蓄水位能够增加河道对地下水的补给,降低地下水的排泄,有利于区域水资源的开发利用。

The relation of supply and drainage between river and intercoastal grounderwater depends on contrast of river level to groundwater level. Soil texture depends on soil permeability. Under the definite soil texture condition, the supply and drainage depend on vertical flow area and hydraulic slope. Flow area depends on riverway and sluice capability. Hydraulic slope depends on the the control and manage of river, the amout of supply water and used water, the riverside height, the exploitation and the use and so on. If the river sluice level is raised up, the amount of river supply for groundwater will increase and the amount of drainage will reduce. It will be helpful for regional water resource uses.