@MastersThesis{Temporim:2017:MoDeSu,
author = "Temporim, Filipe Alto{\'e}",
title = "Monitoramento de deforma{\c{c}}{\~o}es em superf{\'{\i}}cie na
mina de ferro N5E/Prov{\'{\i}}ncia Caraj{\'a}s por
interferometria diferencial avan{\c{c}}ada com dados TerraSAR-X",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2017",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2017-03-07",
keywords = "TerraSAR-X, interferometria SAR, mina de N5E, prov{\'{\i}}ncia
mineral de Caraj{\'a}s, regi{\~a}o Amaz{\^o}nica,
interferometry SAR, N5E mine, mineral province of Caraj{\'a}s,
Amazon region.",
abstract = "Na Prov{\'{\i}}ncia Mineral de Caraj{\'a}s, regi{\~a}o
amaz{\^o}nica, se desenvolve a mais importante atividade de
minera{\c{c}}{\~a}o do Brasil. A Vale S.A. tem o direito de
operar na {\'a}rea da mina N5E, onde existem produtos de
altera{\c{c}}{\~a}o de rochas de baixa qualidade
geomec{\^a}nica relacionados a arenitos, siltitos e cobertura
later{\'{\i}}tica. Para monitorar a deforma{\c{c}}{\~a}o de
superf{\'{\i}}cie, foram utilizadas 33 imagens TerraSAR-X
cobrindo o per{\'{\i}}odo de mar{\c{c}}o de 2012 a abril de
2013. Foram aplicadas duas abordagens de radar de abertura
sint{\'e}tica interferom{\'e}trica (InSAR) avan{\c{c}}adas:
DInSAR baseadas em s{\'e}rie temporal e PSI baseada em
interferometria por espalhadores persistentes. Os resultados
mostraram que a maior parte da mina pode ser considerada
est{\'a}vel no per{\'{\i}}odo de cobertura de
aquisi{\c{c}}{\~a}o das imagens SAR. No entanto, as maiores
taxas de deforma{\c{c}}{\~o}es foram detectadas em locais
mapeados como aterro, a norte da cava da mina, provavelmente
relacionadas a mecanismos de recalque. Em outros setores onde
houve subsid{\^e}ncia em baixa escala, foram mapeadas estruturas
geol{\'o}gicas, indicando que as deforma{\c{c}}{\~o}es
est{\~a}o concentradas ao longo de um corredor de
deforma{\c{c}}{\~a}o composto por falhas, fraturas e dobras,
relacionado ao Sistema de Falhas Caraj{\'a}s. Para validar os
dados PSI, foram gerados gr{\'a}ficos com dados de deslocamento
da medida topogr{\'a}fica de campo. Os gr{\'a}ficos mostraram
que as deforma{\c{c}}{\~o}es superficiais durante a cobertura
das imagens TSX-1 est{\~a}o dentro do limiar de seguran{\c{c}}a
da mineradora e n{\~a}o apresentam risco de colapso. Al{\'e}m
disso, a estrat{\'e}gia de medi{\c{c}}{\~a}o baseada em ambos
os processamentos interferom{\'e}tricos pode ser presumida como
sendo representativa do deslocamento de superf{\'{\i}}cie
expresso por valores de prisma, com base na valida{\c{c}}{\~a}o
estat{\'{\i}}stica. Os dados interferom{\'e}tricos forneceram
uma vis{\~a}o sin{\'o}ptica e detalhada do processo de
deforma{\c{c}}{\~a}o que afeta o complexo de
minera{\c{c}}{\~a}o, sem a necessidade de campanha de campo ou
instrumenta{\c{c}}{\~a}o. Assim, a investiga{\c{c}}{\~a}o
enfatizou a import{\^a}ncia que a tecnologia InSAR tem no
monitoramento. ABSTRACT: The Mineral Province of Caraj{\'a}s,
Amazon region, the most important mining activity of Brazil is
developed. Vale S.A. has the right to operate in the area of the
N5E mine, where there are products of alteration of rocks of low
geomechanical quality related to sandstones, siltstones and a
lateritic cover. In order to monitor surface deformation, were
used 33 TerraSAR-X images covering the period from March 2012 to
April 2013. Two interferometric synthetic aperture radar
approaches (InSAR) were applied: DInSAR based on time series and
PSI based on Interferometry by persistent scatterers. The results
showed that most of the mine can be considered stable during the
coverage period of acquisition of SAR images. However, the highest
deformation rates were detected in a geological unit mapped as a
landfill, north of the mine pit, probably related to accommodation
mechanisms. In other sectors where there was low-scale subsidence,
geological structures were mapped, indicating that the
deformations is concentrated along the deformation corridor
composed of faults, fractures and folds, related to the
Caraj{\'a}s Fault System. To validate the PSI data, graphs were
generated with displacement data of the field topographic
measurement. The graphs showed that the surface deformations
during the coverage period of acquisition of SAR images are within
the miner's safety threshold and do not present a risk of
collapse. Furthermore, the measurement strategy based on both
interferometric processing may be presumed to be representative of
the surface displacement expressed by prism values, based on
statistical validation. The interferometric data provided a
synoptic and detailed view of the deformation process that affects
the mining complex, without the need for field campaigning or
instrumentation. Thus, the research emphasized the importance of
InSAR technology in monitoring.",
committee = "Galv{\~a}o, L{\^e}nio Soares (presidente) and Gama, F{\'a}bio
Furlan (orientador) and Paradella, Waldir Renato (orientador) and
Mura, Jos{\'e} Cl{\'a}udio and Miranda, Fernando Pellon de",
copyholder = "SID/SCD",
englishtitle = "Monitoring of surface displacements in iron mine N5E/Caraj{\'a}s
province by advanced differential interferometry using TerraSAR-X
data",
language = "pt",
pages = "186",
ibi = "8JMKD3MGP3W34P/3NJ9Q7P",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3NJ9Q7P",
targetfile = "publicacao.pdf",
urlaccessdate = "23 abr. 2024"
}