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| Titel |
Stream depletion rate with horizontal or slanted wells in confined aquifers near a stream |
| VerfasserIn |
P.-R. Tsou, Z.-Y. Feng, H.-D. Yeh, C.-S. Huang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 14, no. 8 ; Nr. 14, no. 8 (2010-08-06), S.1477-1485 |
| Datensatznummer |
250012394
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| Publikation (Nr.) |
 copernicus.org/hess-14-1477-2010.pdf |
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| Zusammenfassung |
| Pumping in a vertical well may produce a large drawdown cone near the well.
In this paper, the solution is first developed for describing the
groundwater flow associated with a point source in a confined aquifer near a
stream. Based on the principle of superposition, analytical solutions for
horizontal and slanted wells are then developed by integrating the point
source solution along the well axis. The solutions can be simplified to
quasi-steady solutions by neglecting the exponential terms to describe the
late-time drawdown, which can provide useful information in designing
horizontal well location and length. The direction of the well axis can be
determined from the best SDR subject to the drawdown constraint. It is found
that hydraulic conductivity in the direction perpendicular to the stream
plays a crucial role in influencing the time required for reaching
quasi-steady SDR. In addition, the effects of the well length as well as the
distance between the well and stream on the SDR are also examined. |
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