Banca de DEFESA: Kastelli Pacheco Sperandio

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : Kastelli Pacheco Sperandio
DATA : 22/05/2018
HORA: 14:30
LOCAL: Centro Federal de Educação Tecnológica de Minas Gerais
TÍTULO:

Application of the ground penetrating radar to riks area (landslide) in belo horizonte – MG

PALAVRAS-CHAVES:

GPR, risk area, landslide.

PÁGINAS: 74
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Construção Civil
ESPECIALIDADE: Materiais e Componentes de Construção
RESUMO:

In the area of engineering, knowing the characteristics and conditions of the soil is essential to understand and predict their behavior during the works carried out, as a way to ensure their safety. The definition of the geological, geotechnical and geomorphological characteristics of the subsoil is fundamental, among many purposes, for the understanding and prevention of accidents such as landsliding, since these characteristics, together with pluviometric factors and anthropic actions, are considered the main causative factors of these accidents present in periods of intense and prolonged rainfall in Brazil. Among many methods and equipment that have emerged in recent years to characterize the soil, one has stood out for its efficiency and ease of application in the most diverse situations: the Ground Penetrating Radar (GPR). This geophysical research technique, which consists of the emission and capture of high frequency electromagnetic waves through antennas located on the surface, to obtain images of high resolution of the subsurface presents high potential to aid in the prevention of accidents involving landslides. In this context, the present work proposes to use GPR in soil characterization of a slope located in the city of Belo Horizonte, aiming to develop a preventive methodology to be applied in areas with risk of landslide. The soil characterization is composed by the results of laboratory tests on the samples collected at the site, percussion drilling (SPT) and geophysical tests using GPT. In order to determine the frequency of antennas and the methodology to be used, preliminary tests with GPR of 100 MHz and 200 MHz frequency were performed in two of the profiles defined for the study site. Due to the intense noise present at the site it was not possible to define the ideal antenna frequency for the site, since the radargrams resulting from these preliminary tests are not of good quality. Possibly the interferences generated in the data come from a high voltage tower located near the study site, and then new preliminary tests are necessary, after the strategy change in order to reduce these interferences, so that the studies can be continued. It is expected at the end of the work that quantitative (laboratory and survey) and qualitative (use of GPR) assessments converge to the possibility of being able to state whether or not the site is under threat of landslide.

MEMBROS DA BANCA:
Externo ao Programa - FELIPE DE MORAES RUSSO
Presidente - HERSILIA DE ANDRADE E SANTOS
Externo à Instituição - PAULO ROBERTO ANTUNES ARANHA - UFMG
Interno - REMKE LEANDER VAN DAM - UWAUS