| Texto completo | |
| Autor(es): Mostrar menos - |
Paradella, Waldir R.
[1]
;
Ferretti, Alessandro
[2]
;
Mura, Jose C.
[1]
;
Colombo, Davide
[2]
;
Gama, Fabio F.
[1]
;
Tamburini, Andrea
[2]
;
Santos, Athos R.
[1]
;
Novali, Fabrizio
[2]
;
Galo, Mauricio
[3]
;
Camargo, Paulo O.
[3]
;
Silva, Arnaldo Q.
[4]
;
Silva, Guilherme G.
[1]
;
Silva, Aristotelina
[5]
;
Gomes, Leonardo L.
[5]
Número total de Autores: 14
|
| Afiliação do(s) autor(es): | [1] Natl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos - Brazil
[2] Tele Rilevamento Europa TRE Srl, I-20143 Milan - Italy
[3] Sao Paulo State Univ, UNESP, FCT, BR-19060900 Presidente Prudente - Brazil
[4] Fed Univ Para, IG, UFPA, BR-66075110 Belem, Para - Brazil
[5] Vale SA, DIFN, GEDEN, GAGHN, BR-68516000 Serra Dos Carajas - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ENGINEERING GEOLOGY; v. 193, p. 61-78, JUL 2 2015. |
| Citações Web of Science: | 31 |
| Resumo | |
The Carajas mineral province encompasses the world's largest iron reserves with excavation carried out through open pit benching. Mining operations in the area have significant areas of rock mass movements and surface displacements that potentially lead to slope instabilities with risks to personnel, equipment and production. Instabilities can be expected due to deep excavations in rock masses of low geomechanical quality, blasting practices and heavy precipitation. In this paper, ground instabilities are monitored through an integrated SAR analysis based on a data-stack of 33 TerraSAR-X images. This approach was designed to monitor distinct displacement regimes, ranging from small to high deformation rates, and to map surface changes, based on variations of radar reflectivity. Results were compared with field information (total station/prisms, ground based radar, geological and geomechanical maps), and the approach showed to be effective for monitoring ground deformation in the region. Due to its capabilities (synoptic view, high accuracy, dense grid sampling), the complementary use of space-based SAR with field monitoring systems proved to be strategic for operational mining planning and risk assessment in this challenging environment. (C) 2015 The Authors. Published by Elsevier B.V. (AU) | |
| Processo FAPESP: | 10/51267-9 - Detecção e monitoramento de estabilidade de taludes e deformações superficiais em mina a céu aberto através de técnicas avançadas de interferometria diferencial de radar: uma avaliação na mina de ferro N4 (Carajás) utilizando dados do satélite TerraSAR-X |
| Beneficiário: | Waldir Renato Paradella |
| Modalidade de apoio: | Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE |