Analytical solutions for two-dimensional groundwater flow with subsurface drainage tiles

Xiuyu Liang; You-Kuan Zhang; Keith E. Schilling

doi:10.1016/j.jhydrol.2014.12.015

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Analytical solutions for two-dimensional groundwater flow with subsurface drainage tiles

Journal article

Peer reviewed

Analytical solutions for two-dimensional groundwater flow with subsurface drainage tiles

Xiuyu Liang, You-Kuan Zhang and Keith E. Schilling

Journal of hydrology (Amsterdam), Vol.521, pp.556-564

02/01/2015

DOI: 10.1016/j.jhydrol.2014.12.015

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Abstract

The tile drainage problem in an unconfined aquifer was investigated. A mathematical model was established that describes two-dimensional groundwater flow in an unconfined aquifer near a river with a linearized Boussinesq equation, time-dependent sources and a sloped tile. Analytical solutions for groundwater level and discharge were derived and used to compare hydrologic conditions in a system with and without tile (natural drainage). We found that the spatial and temporal variations of groundwater level and discharge were significantly altered by the presence of drainage tile. In an aquifer with tile drainage, the groundwater level was lower and total groundwater discharge to the river increased compared to an aquifer with no tile. Application of the solutions to a synthetic case demonstrates that the analytical solutions derived can be used to quantify effect of tiles on nitrate loads in the baseflow of a river and assess the effectiveness of various conservation practices. (C) 2014 Elsevier B.V. All rights reserved.

Engineering

Engineering, Civil

Geology

Geosciences, Multidisciplinary

Physical Sciences

Science & Technology

Technology

Water Resources

Details

Title: Subtitle: Analytical solutions for two-dimensional groundwater flow with subsurface drainage tiles
Creators: Xiuyu Liang - Nanjing University
You-Kuan Zhang - Nanjing University
Keith E. Schilling - University of Iowa
Resource Type: Journal article
Publication Details: Journal of hydrology (Amsterdam), Vol.521, pp.556-564
Publisher: Elsevier
DOI: 10.1016/j.jhydrol.2014.12.015
ISSN: 0022-1694
eISSN: 1879-2707
Number of pages: 9
Grant note: 2012ZX07204-001; 2012ZX07204-003 / National Key project "Water Pollution Control" of China NSFC-41272260; NSFC-41330314; NSFC-41302180 / National Nature Science Foundation of China; National Natural Science Foundation of China (NSFC) SBK201341336 / Natural Science Foundation of Jiangsu Province
Language: English
Date published: 02/01/2015
Academic Unit: Earth and Environmental Sciences; IIHR--Hydroscience and Engineering
Record Identifier: 9984383278102771

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