推導部分貫穿井於三維非等向含水層近似解析解之研究=Semi-analytical solution of a partially penetrating well in a three-dimensional anisotropic aquifer
Journal
Journal of Taiwan Agricultural Engineering
Journal Volume
66
Journal Issue
1
Pages
44-60
Date Issued
2020
Author(s)
Abstract
Investigation of hydrological property of the aquifer is a key work in groundwater modeling. Previous research focused on 2D or 3D fully penetrated wells in anisotropic confined aquifers to derive the analytical of horizontal hydraulic conductivity, i.e. Kxx and Kyy. This paper demonstrates a new semi-analytical solution for the pumping-drawdown response of the partially penetrating well, situated in the homogenous and anisotropic 3D confined aquifer via Gauss-Legendre Quadrature and Hantush well function (Generalized Incomplete Gamma Function) in order to increase the precision of the solution. The results show more Gauss points lead to higher precision. However, considering the modeling efficiency, 32 Gauss points is applied to assess what range is best for Hantush well function and associated analytical solution with different u and Xn/L. Finally, the pumping test of screen opening at different depth for the homogenous, anisotropic confined aquifer is investigated. Results show the drawdown is highest with opening in the middle section.
Publisher
社團法人台灣農業工程學會
Type
journal article