Analytical modelling of gas leakage rate through a geosynthetic clay liner-geomembrane composite liner due to a circular defect in the geomembrane

被引：49
作者：
Bouazza, Abdelmalek [1 ]
Vangpaisal, Thaveesak [2 ]
Abuel-Naga, Hossam [1 ]
Kodikara, Jayantha [1 ]
机构：
[1] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia
[2] Ubon Ratchathani Univ, Dept Civil Engn, Ubon Ratchathani 34190, Thailand
来源：
GEOTEXTILES AND GEOMEMBRANES | 2008年 / 26卷 / 02期
基金：
澳大利亚研究理事会;
关键词：
analytical modelling; defects; gas flow; geomembrane; GCL; leakage;
D O I：
10.1016/j.geotexmem.2007.09.001
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
An analytical model was developed to predict gas leakage rate through a GM/GCL composite liner with a circular defect in the geomembrane. The predictions of the proposed analytical model were found to be in good agreement with experimental results for specimens with moisture content higher than the so-called critical moisture content. However, at moisture contents lower than the critical moisture content, the model predictions seem to overestimate the experimental results. This deficiency was attributed to the change in the gas flow pattern at lower moisture content, which appears to be controlled by the ratio between the gas permeability of the GCL and the gas permeability of the interface zone between the GCL and the geomembrane. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：122 / 129
页数：8
相关论文
共 28 条
[1]   Laboratory investigation of flow rate through composite liners consisting of a geomembrane, a GCL and a soil liner [J].
Barroso, Madalena ;
Touze-Foltz, Nathalie ;
von Maubeuge, Kent ;
Pierson, Patrick .
GEOTEXTILES AND GEOMEMBRANES, 2006, 24 (03) :139-155
[2]   Evaluation of interface shear strength of composite liner system and stability analysis for a landfill lining system in Thailand [J].
Bergado, D. T. ;
Ramana, G. V. ;
Sia, H. I. ;
Varun .
GEOTEXTILES AND GEOMEMBRANES, 2006, 24 (06) :371-393
[3]   Gas transmissivity at the interface of a geomembrane and the geotextile cover of a partially hydrated geosynthetic clay liner [J].
Bouazza, A. ;
Vangpaisal, T. .
GEOSYNTHETICS INTERNATIONAL, 2007, 14 (05) :316-319
[4]   Gas permeability of GCLs: effect of poor distribution of needle-punched fibres [J].
Bouazza, A. ;
Vangpaisal, T. .
GEOSYNTHETICS INTERNATIONAL, 2007, 14 (04) :248-252
[5]   Laboratory investigation of gas leakage rate through a GM/GCL composite liner due to a circular defect in the geomembrane [J].
Bouazza, A ;
Vangpaisal, T .
GEOTEXTILES AND GEOMEMBRANES, 2006, 24 (02) :110-115
[6]  
BOUAZZA A, 2002, P 7 INT C GEOS NIC F, V2, P445
[7]   Investigation of the effects and degree of calcium exchange on the Atterberg limits and swelling of geosynthetic clay liners when subjected to wet-dry cycles [J].
Bouazza, Abdelmalek ;
Jefferis, Stephan ;
Vangpaisal, Thaveesak .
GEOTEXTILES AND GEOMEMBRANES, 2007, 25 (03) :170-185
[8]   Effect of wet-dry cycles and cation exchange on gas permeability of geosynthetic clay liners [J].
Bouazza, Abdelmalek ;
Vangpaisal, Thaveesak ;
Jefferis, Stephen .
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2006, 132 (08) :1011-1018
[9]   Numerical study of advective flow through composite liners [J].
Cartaud, F. ;
Goblet, P. ;
Touze-Foltz, N. .
GEOSYNTHETICS INTERNATIONAL, 2005, 12 (06) :299-309
[10]   Experimental investigation of the influence of a geotextile beneath the geomembrane in a composite liner on the leakage through a hole in the geomembrane [J].
Cartaud, F ;
Touze-Foltz, N ;
Duval, Y .
GEOTEXTILES AND GEOMEMBRANES, 2005, 23 (02) :117-143
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