Titre :
|
Comparison of portable and permanent landfill liner leak detection systems
|
Auteurs :
|
S. Taylor ;
C. White ;
R. Barker
|
Type de document :
|
article/chapitre/communication
|
Année de publication :
|
1999
|
Format :
|
p.157-174
|
Langues:
|
= Anglais
|
Catégories :
|
MATERIAUX
|
Mots-clés:
|
ETANCHEITE
;
DECHARGE
;
GEOMEMBRANE
;
FUITE
|
Résumé :
|
Monitoring of the integrity of electrically non-conductive geomembrane liners installed at waste sites using electrical geophysical techniques has been carried out for a number of years using above-liner leak location surveys and, more recently, below-liner monitoring systems. We compare the theoretical response of both types of survey to a hole in a liner and then compare with measurements made in the field. The theoretical leak response indicates that above-liner surveys are sensitive to leaks over a greater area, though both responses result in comparable leak detectability. However, field data suggest that in practice, measurements made on a sparse grid below the liner have the greater sensitivity to certain leaks. This may be due to the differing leak geometries and background conditions present above and below the liner.
|
Source :
|
ASTM Special technical publication, vol 1358
|