含水层和上覆弱透水层水文地质参数的计算方法

Method for the Analysis of Hydrogeologic Parameters in Aquifer and Aquitard

本文建立非线性回归方法与地下水三维数值模型———MODFLOW相结合的优化模型 ,利用含水层抽水试验资料确定含水层水平渗透系数Kr 和储存率Ss,以及上覆弱透水层垂直渗透系数Ka 和给水度Sy。通过 2个示例分析模型计算过程 ,结果表明 ,该模型不仅能有效地确定这些水文地质参数 。

The option model MODFLOW that combines the nonlinear r egression method with three-dimensional numerical groundwater model is presente d.Using the pumping test data in aquifer,the horizontal hydraulic conductivity K_r and the specific storage S_s in aquifer,and the vertical hydraulic conductivity K_a and specific yield S_y in aquitard are calculated.Th rough two examples it is shown that the said model cannot only be used to determ ine the parameters but also to give the standard errors and the coefficient of c orrelation between the parameters.