Aplicação do método da eletrorresistividade na investigação de plumas de contaminação em aterros sanitários

• Autor(a) principal: Galdeano, Larissa Ruas [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155474; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-06-05/000884696.pdf
• topic: Geofisica; Aterro sanitário; Águas subterrâneas; Contaminação; Resíduos sólidos; São Carlos (SP)

The researching area of the Completion of Course Work is situated on the Old Sanitary Landfill of São Carlos city, which is located in Fazenda Guaporé. Besides its activities were already finished, there is a possibility of occurrence of a contaminants and slurry percolation produced by degradation of solid waste through a contamination plume. The objective of this research is consisted of an evaluation of lateral migration of a possible contamination plume at the environment by using geophysics methods. The method used on this research was the Geoeletric Method of Electrical Resistivity with the application of the Constant Separation Traversing (CST) technique with dipole-dipole array. This methodology allows the evaluation of materials resistivity values in subsurface by creating maps and sections and indicates possible contamination plumes percolations by the variability of the measured resistivities. There were made five investigation lines by using the Constant Separation Traversing Technique along the Sanitary Landfill, which were resulted on five pseudosections with measures of apparent resistivities and depths on the field that were posteriorly processed by the Res2dinv V. 3.5 software in order to create geoelectrical models with real values of resistivity. The integrated analysis of pseudosections and geoelectrical models of the five investigation lines in addition to the two Maps of Top Quota of Bedrock indicated that there are resistivity anomalies probably related to the percolation of a slurry contamination plume through fractures and faults of the bedrock and to the alteration soil and superficial sediment layers, which is recommended an physical and chemical investigation of those sites by accomplishing a probing drill or sampling