降水入渗补给量随地下水埋深变化的实验研究

利用冉庄8m定埋深地中蒸渗仪的观测资料，根据蓄满产流理论，采用分层计算还原的方法，研究降水入渗补给量随地下水埋深的变化规律。揭示了最佳埋深和稳定点的形成机理。在试验条件下，最佳埋深出现在3m左右，降水入渗补给量随地下水埋深的增大而减小，6m以后趋于稳定。

Study on Precipitation Infiltration Recharge with Groundwater Depth Variation

With the theory of runoff yield at natural storage and the computed restore method at separate layers, the variation law of the precipitation infiltration recharge with groundwater depth was investigated by using the measured data from the lysimeter in 8m fixed-depth at Ranzhuang. The genetic-mechanism of optimal depth and stable points was revealed. Under the test condition, the optimal depth is about 3m, the precipitation infiltration recharge decrease with the groundwater depth increasing, which approaches stability at 6m depth.