基于抽水试验的含水层水文地质参数计算方法探讨——以天津市陆家嘴广场项目工程为例

Discussion on Calculation Method of Hydrogeological Parameters of Aquifer Based on Pumping Test——Taking the Lujiazui Square Project in Tianjin as an example

以天津市陆家嘴广场项目工程抽水试验数据为基础,为查明场地地基土渗透性和富水性,测定含水层的渗透系数、影响半径等水文地质参数,运用完整井非稳定流抽水试验资料的数学模型,利用迭代法、解析法和图解法计算含水层的渗透系数及影响半径。计算结果表明:试验及计算方法正确,所得结果可靠,所用方法可为类似工程含水层水文地质参数计算提供参考。

Based on the pumping test data of the Lujiazui Square project in Tianjin,in order to find out the permeability and water-richness of the foundation soil,determine the hydrogeological parameters such as the aquifer’s permeability coefficient and influence radius,and use the complete well unsteady flow pumping test data.The mathematical model uses the iterative method,the analytical method and the graphic method to calculate the permeability coefficient and the influence radius of the aquifer.The calculation results show that the test and calculation methods are correct and the results are reliable.The method used can provide reference for the calculation of hydrogeological parameters of similar engineering aquifers.