地下水渗流非构造网格有限差分法数值模拟研究

研究山区地下水的区域多处于水文地质条件复杂，内外边界不规则，各向异性非均质的地段，为了客观准确地分析山区地下水渗流分布，在已有非构造网格有限差分数值模型基础上重点探讨了内部非均质边界上结点参数的取值方法，结合有相同网格划分的有限单元数值模型，通过在某实例中的具体应用，并用实测值来检验，分析比较各种取值方法的精确性与可靠性，选出最佳取值方法。

Numerical Simulation on Groundwater Seepage Flow by Unstructured FDM Model

The study mountainous area for modeling groundwater are usually located at a region with complex geo-hydrological conditions. In addition, the inner and outer boundaries are not in regular, and the region is anisotropic and non-homogeneous. In order to analyze the distribution of groundwater seepage flow objectively and accurately, methods for evaluating parameters of nodes on the inner non-homogeneous boundaries were discussed based on the developed unstructured Finite Difference Method （FDM） schemes numerical model. Through specific application in some example and comparison with measured value, the optimum method was selected by analyzing accuracy and reliability of several evaluating methods.