1. An analytical study on groundwater flow in drainage basins with horizontal wells.
- Author
-
Wang, Jun-Zhi, Jiang, Xiao-Wei, Wan, Li, Wang, Xu-Sheng, and Li, Hailong
- Subjects
- *
GROUNDWATER flow , *WATERSHEDS , *HORIZONTAL wells , *ANALYTICAL solutions , *STAGNATION point , *TOPOGRAPHY - Abstract
Analytical studies on release/capture zones are often limited to a uniform background groundwater flow. In fact, for basin-scale problems, the undulating water table would lead to the development of hierarchically nested flow systems, which are more complex than a uniform flow. Under the premise that the water table is a replica of undulating topography and hardly influenced by wells, an analytical solution of hydraulic head is derived for a two-dimensional cross section of a drainage basin with horizontal injection/pumping wells. Based on the analytical solution, distributions of hydraulic head, stagnation points and flow systems (including release/capture zones) are explored. The superposition of injection/pumping wells onto the background flow field leads to the development of new internal stagnation points and new flow systems (including release/capture zones). Generally speaking, the existence of n injection/pumping wells would result in up to n new internal stagnation points and up to 2 n new flow systems (including release/capture zones). The analytical study presented, which integrates traditional well hydraulics with the theory of regional groundwater flow, is useful in understanding basin-scale groundwater flow influenced by human activities. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF