基于抽水试验资料确定含水层水文地质参数

Determination of Hydrogeological Parameters of Leaky Aquifer Based on Pumping Test Data of Partially Penetrating Well near the Boundary

根据现场稳定流抽水试验资料确定含水层水文地质参数是野外水文地质工作中最常用的方法之一．但当抽水含水层的边界形状、边界条件较为复杂时，就很难找到合适的公式用来计算水文地质参数．考虑有越流和一侧有隔水边界的影响，基于承压不完整井稳定流抽水试验资料提出了一种确定含水层水文地质参数的方法．采用该方法通过一次稳定流抽水试验可以同时确定出主承压含水层的导水系数、弱透水层的渗透系数和弱透水层的越流因素．计算实例表明，该方法不仅简单易行。

One of the most useful methods in field hydrogeological work is to determine hydrogeological parameters of an aquiter based on the steady flow pumping test data.But when the boundary shape and boundary conditions are complicated,it is very difficult to find a suitable formula for calculating hydrogeological parameters.In this paper,in consideration of leakage and the impervious boundary on one side of a confined aquifer,a method for determining hydrogeological parameters is introduced,which is based on the steady flow pumping test data of a partially penetrating well.By this method,the hydraulic conductivity and leakage factor of the semipervious layer and the transmissibility of the confined aquifer can be obtained through a steady flow pumping test.A practical case illustrates that the present method is simple and practical,and more hydrogeological parameters can be obtained by means of the data from one pumping test.