The aim of this study is to investigate numerically the performance of a prefabricated vertical drain (PVD) as a soil vapour extraction well, and the pattern of the induced air flow. A validated numerical model for a single PVD extraction well is developed based on the result of a well-designed laboratory air-pumping test. The results of the validated numerical model are used to evaluate the flow efficiency of a PVD extraction well. The validity of the simple analytical approach to determine air permeability based on the results of air-pumping tests is also discussed. The output of this study highlights the influence of PVD well resistance on the overall performance of soil vapour extraction systems, and the effect of the PVD's oblong cross-section on the air flow characteristics.
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June 2008
Research Article|
June 01 2008
Numerical evaluation of prefabricated vertical drain enhanced soil vapour extraction system Available to Purchase
H. Abuel-Naga;
H. Abuel-Naga
Senior Lecturer
1
Department of Civil and Environmental Engineering, University of Auckland
Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand
Telephone: +64 9 373 7599 ext. 89067, Telefax: +64 9 373 7462, E-mail: h.naga@auckland.ac.nz
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A. Bouazza;
A. Bouazza
Associate Professor
2
Department of Civil Engineering, Building 60, Monash University
Vic. 3800, Australia
Telephone: +61 3 9905 4956, Telefax: +61 3 9905 4944, E-mail: malek.bouazza@eng.monash.edu.au (corresponding author)
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J. Bowders;
J. Bowders
Professor
3
Department of Civil and Environmental Engineering, University of Missouri-Columbia
Columbia, MO 65211-2200, USA
Telephone: +1 573 882 4784, Telefax: +1 573 882 4784, E-mail: Bowders@missouri.edu
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O. Collazos
O. Collazos
Professor
4
Department of Civil and Environmental Engineering, Polytechnic University of Puerto Rico
PO Box 191234, San Juan, PR 00919-1234, Puerto Rico
Telephone: +1 787 529 4207, Telefax: +1 787 771 0011, E-mail: ocollazos@pupr.edu
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Publisher: Emerald Publishing
Received:
February 28 2007
Revision Received:
January 14 2008
Accepted:
January 20 2008
Online ISSN: 1751-7613
Print ISSN: 1072-6349
© 2008 Thomas Telford Ltd
2008
Geosynthetics International (2008) 15 (3): 216–223.
Article history
Received:
February 28 2007
Revision Received:
January 14 2008
Accepted:
January 20 2008
Citation
Abuel-Naga H, Bouazza A, Bowders J, Collazos O (2008), "Numerical evaluation of prefabricated vertical drain enhanced soil vapour extraction system". Geosynthetics International, Vol. 15 No. 3 pp. 216–223, doi: https://doi.org/10.1680/gein.2008.15.3.216
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