承压水完整井Darcy流和非Darcy流水头分布计算方法的分析比较

Analyses and comparison of Darcy flow and non-Darcy flow of fully penetrating well in a confined aquifer

探讨了地下水向承压水完整井的稳定运动,比较了在Darcy流和非Darcy流情况下井周围水位降深的计算方法。运用Darcy定律、Forchheimer公式及指数型公式对井周围的水头分布进行求解,并对结果进行了比较,得到不能单纯用线性渗流规律代替非线性渗流规律的结论,及非线性渗流不同公式之间的区别与联系。

The authors discussed the steady movement from ground water to fully penetrating well in a confined aquifer, and compared the calculation method of drawdown around fully penetrating well in the conditions of Darcy flow and non-Darcy flow. Using Darcy＇s law, Forchheimer equation and the exponential formula of wells to solve the distribution around the head, and compared with the results. It was proved that the linear seepage regularity could not be simply replaced by the non-linear seepage regularity, and the difference and connection between different non-linear flow equations.