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介绍了能够考虑水文气象过程的饱和-非饱和非稳定地下水流运动数学模型。以全封闭和半封闭式防渗墙为重点研究对象,以长江重要堤防为背景概化得到典型二元和多元结构堤基、堤身断面及土层的饱和非饱和渗流参数;以实测资料为基础概化得到较典型的水文气象过程,提出降雨入渗和蒸发排泄边界处理方式以及初始条件确定方法;提出根据二维模型模拟结果用有无对比法分析防渗墙对地下水动态的影响,根据三维模型模拟结果分析防渗墙端部绕渗对地下水流场动态的影响。模型和参数具有典型性,研究方法合理、有效。
The mathematical model of saturated-unsaturated and unsteady groundwater flow considering hydrrometeorological process is introduced. Taking the fully enclosed and semi-enclosed cutoff walls as the key research object, the saturated and unsaturated seepage parameters of the embankment and embankment sections of typical binary and multivariate structures and soil layers are generalized based on the important dike in the Yangtze River. Based on the measured data of Based on the two-dimensional model simulation results, it is proposed to analyze the influence of seepage prevention wall on the groundwater dynamics based on the comparison of two-dimensional model with the non-comparison method. According to Influence of End Permeability of Cutoff Wall on Groundwater Flow Field Dynamics by 3D Model Simulation. Models and parameters are typical, the research method is reasonable and effective.