综合利用多种方法确定潜水含水层渗透系数

为确定潜水含水层的渗透系数,施工了一个主抽水井和两个观测井,采用了潜水含水层稳定流完整井多孔、单孔抽水试验的公式法、非稳定流的完整井的半对数直线图解法和基于抽水试验资料处理软件的纽曼模型求参法三种方法进行计算,结果发现各计算方法的结果相差不大,能够相互验证。最后,选取半对数直线图解法的计算结果作为最终计算结果。该研究对潜水含水层渗透系数的计算有一定的参考价值。

Phreatic Aquifer Permeability Coefficient Determination through Comprehensive Multiple Methods

To determine phreatic aquifer permeability coefficient, one pumping well and two observation wells have been drilled. Using phreatic aquifer steady flow fully penetrating multiple wells, single well pumping tests formulae, unsteady flow fully penetrating well semi-logarithmic linear graphic and parameter seeking Newman model based on pumping test data processing software three methods carried out permeability coefficient computation. Finally found that the results from each method are almost the same, and can be mutually authenticated. Eventually, the result from semi-logarithmic linear graphic method has been selected. The study has certain reference value in phreatic aquifer permeability coefficient computation.