分析直线隔水边界附近抽水试验数据的新方法

Linear Regression Method to Identify Aquifer Parameters and the Position of Impervious Boundary by Using the Data from Pumping Tests

提出了一种分析在具有直线隔水边界含水层中抽水试验数据的新方法。将降深表达式中的两个井函数利用其展开式的前三项作为其近似式,建立一个二元线性回归方程。将试验数据转换后,利用线性回归法可计算方程中的常数,然后就可计算含水层参数和映射井到观测孔间的距离。与现有方法相比较,其具有可预先判断是否适用的独特优点。

A new method for estimating parameters of aquifer and determining the position of line impervious boundary is proposed. Taking the first three teams of the expression of Theis exact solution as the approximation of the two wall functions describing the drawdown, the binary linear regression expression is developed. After the observation data arc transformed into the data used in can be calculated, and the parameters of aquifer and the regression expression, the constants in the expression the distance between the imaginary pumping well and the observation well can be determined. Compared with the current-used methods the proposed method has the advantage that the suitability of the calculation can be decided in advance.