邯郸地区土壤水入渗规律实验及数值模拟方法研究

Research on the Infiltration Regularity of Soil in Handan with Numerical Simulation Method

在对土壤入渗理论进行总结和分析的基础上，依据邯郸市平原区的水文水情的基本特点，选定2~3处地点进行实验，完成了静态数据的收集和动态数据的观测，确定了实验区土壤质地类型、土壤容重等物理特性，结合实验测定的饱和导水率K、土壤水分特征曲线θ（ h）推算非饱和导水率K（θ）、扩散率 D（θ）等土壤水分运动参数。运用上述数据对Van Genuchten模型加以改进，并运用改进后的模型对实验中的水分变化过程进行数值模拟。结合实测成果和数值模拟成果，对邯郸市平原区已选定实验点土壤水入渗规律进行分析。

With the knowledge of soil infiltration theory and basic hydrological conditions of plain in Handan, this paper conducts experiments in 3 places to get static data and dynamic observation data, based on which physical properties like the soil type and soil capacity of the studied area are clarified. Then, parameters for water movement in soil like the unsaturated hydraulic conductivity K（ ） and diffusivity D（ ） are calculated according to saturated hydraulic conductivity K and soil moisture characteristic curve . Furthermore, Van Genuchten Model is improved with these experimental data and then is used to make numerical simulation on the soil quantity variation. At last, the soil infiltration regularity of plain in Handan is analyzed with the data from field research and numerical simulation.