Numerical evaluation of prefabricated vertical drain enhanced soil vapour extraction system

被引：4

作者：

Abuel-Naga, H. ^{[2
]}

Bouazza, A. ^{[1
]}

Bowders, J. ^{[3
]}

Collazos, O. ^{[4
]}

机构：

[1] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[2] Univ Auckland, Dept Civil & Environm Engn, Auckland 1142, New Zealand

[3] Univ Missouri, Dept Civil & Environm Engn, Columbia, MO 65211 USA

[4] Polytech Univ Puerto Rico, Dept Civil & Environm Engn, San Juan, PR 00919 USA

来源：

GEOSYNTHETICS INTERNATIONAL | 2008年 / 15卷 / 03期

关键词：

geosynthetics; prefabricated vertical drains; soil vapour; numerical model; air permeability; well resistance;

D O I：

10.1680/gein.2008.15.3.216

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

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.

引用

页码：216 / 223

页数：8

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