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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
The Use of Ground Penetrating Radar in Municipal Solid Waste Landfill Geotechnical Investigation
Author(s)
José Tavares Araruna Júnior1, Patrício José Moreira Pires2, Débora Lopes Pilotto Domingues1 and Tácio Mauro Pereira de Campos1
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DOI:10.17265/1934-7359/2016.07.011
Affiliation(s)
1. Department of Civil Engineering, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro RJ 22451-900, Brazil
2. Department of Civil Engineering, Federal University of Espirito Santo, Vitória ES 29075-910, Brazil
ABSTRACT
The use of GPR (ground penetrating radar) as an auxiliary tool in
geotechnical and environmental site investigations has increased in Brazil
during the past few years. GPR has been used to delineate contamination plumes,
to aid in geological modelling, to detect buried structures and in
archaeological surveys. This paper describes and discusses the results of a GPR
site investigation carried out at Gramacho Municipal Solid Waste Landfill in
the State of Rio de Janeiro, Brazil. A field study was conducted to detect
failure surfaces in its slopes and within the waste mass. The results have
shown that: (1) Slip surfaces could be indicated by small continuous voids
within the waste mass since there is a good contrast between the dielectric
constant of air and municipal waste; (2) Greenhouse gases pools could also be
indicated by large voids within the waste mass since there is a good contrast
between the dielectric constant of carbon dioxide, methane and municipal waste;
(3) Leachate pools present a high electric conductivity that could be easily
detected by GPR.
KEYWORDS
GPR, landfill, geotechnical investigation, slip surface, leachate, greenhouse gas.
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