Modeling coastal ground-water response to beach dewatering

Li, L., Barry, D.A. and Pattiaratchi, C.B. (1996) Modeling coastal ground-water response to beach dewatering. Journal of Waterway, Port, Coastal, and Ocean Engineering, 122 6: 273-280. doi:10.1061/(ASCE)0733-950X(1996)122:6(273)

Author Li, L.
Barry, D.A.
Pattiaratchi, C.B.
Title Modeling coastal ground-water response to beach dewatering
Journal name Journal of Waterway, Port, Coastal, and Ocean Engineering   Check publisher's open access policy
ISSN 0733-950X
Publication date 1996-11
Sub-type Article (original research)
DOI 10.1061/(ASCE)0733-950X(1996)122:6(273)
Volume 122
Issue 6
Start page 273
End page 280
Total pages 8
Place of publication Reston, VA, United States
Publisher American Society of Civil Engineers
Language eng
Abstract There has been renewed interest in the use of beach dewatering as a technique to combat beach erosion. Although several test and prototype installations have been undertaken worldwide, no guidelines are available to aid the engineering design of such projects. In this paper, we present a numerical model that simulates two-dimensional ground water flow in a coastal aquifer under beach drainage, including water table lowering and seepage face reduction. The boundary element method is applied to solve the Laplace equation for the velocity potential. An internal boundary is used to simulate drainage. We conducted simulations for two different types of drainage systems, i.e., artificial and gravity drainage. The behavior of the water table from the simulations was found to be consistent with field observations. The results also showed that the location and size of the drain affect the efficiency of the drainage system. The system efficiency slightly increases with the size and vertical elevation of the drain. As the drain is shifted landward, the system becomes considerably less efficient. Although they do not represent design criteria, these results indicate considerations which affect the performance of beach dewatering system.
Keyword Macro tidal beaches
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Wed, 02 Feb 2011, 15:16:33 EST