【摘要】 的我国北方平原地区,降雨对地下水补给是地区地下水资源主要补给水源。研究降雨对地下水补给对地区地下水资源评价和合理开发利用地下水有着十分重要的意义。本文根据饱和——非饱和水分运动微分方程和初边值条件模拟浅埋地下水位在降雨入渗补给下有关土壤水和地下水问题。探讨降雨强度对地下水补给的影响;地下水位埋深对降雨补给的影响,以及土壤剖面含水量对降雨补给的影响,最后通过实例模拟蒸发——降雨条件下土壤水和地下水运动问题。更多还原

【Abstract】 Soil-water movement during rain infiltration and evaporation in the presence of a shallow water table in an actual, homogeneous soil is studied numerically, Richard’s equation is ased with capillary potential as a dependertt variable. In this paper we discuss effects of rain intensity, depth to water table and profile water content in the water table for rain infiltration. Data obtained from field observation under bare soil conditions are compared with results of numerical simulation. Computed profiles and drainage flux agree well with the observations basically.更多还原