中文摘要：

基于多孔介质渗流基本理论,建立不同水深条件下黏土、粉质黏土及粉土的常水头井入渗有限元模型.利用Green-Ampt及Philip入渗模型对数值计算结果进行拟合,给出各模型关键参数的计算方法及计算精度,分析入渗模型在非饱和区常水头井入渗中的适用性.结果表明：Philip模型对不同土质、不同入渗类型下非饱和区常水头井入渗均具有很好的适用性,GreenAmpt模型仅适用于黏土及粉质黏土的点源入渗及水深与孔径的相对大小不太大时的垂直线源入渗.最后通过室内试验验证了研究结论的准确性.

英文摘要：

The finite element model of constant head well infiltration for clay,silty clay and silt at different water depth is set up based on the seepage theory of porous media.The Green-Ampt model and Philip infiltration model are used to fit the numerical calculation results in order to obtain the calculation methods and accuracy of every model＇s key parameters,and the applicability of the infiltration model of constant head well in unsaturated mining zone is analyzed.It is concluded that the Philip model shows a good applicability to the constant head well infiltration in non-saturated mining zone in different soils and infiltration types while the Green-Ampt model is only suitable for the point source infiltration of clay and silty clay and the vertical line source infiltration when H/D is not too large.Finally,the above conclusions are verified by laboratory experiments.