Structural analysis applied to slope stability in open pit mine: a case study

• Grant number: 13/15862-8
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2014
• End date: June 30, 2016
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Ginaldo Ademar da Cruz Campanha
• Grantee: Ginaldo Ademar da Cruz Campanha
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Camila Duelis Viana

Abstract

The study of slope stability in open pit excavation is primordial to the security of the enterprise. Currently the main difficulties encountered in open pit mining consist in the difficulty of access to mining fronts, lack of data and time of their acquisition, many times putting the responsible professional at risk. The most modern techniques, such as laser scanning, present as limitations the high cost, the data acquisition conditions and operational difficulties. This project aims to apply the digital photogrammetry, coupled with computational processing and classical techniques of structural mapping in geomechanics, structural characterization of the massif and slope stability of excavation. The plan will be developed in an open pit mine in limestones of the Proterozoic São Roque Group. Sirovision / Sirojoint software will be used in photogrammetric restitution and automatic extraction of discontinuities, and RocFall, Swedge and Dips softwares in data processing and evaluation of planar and wedge failures, toppling and block falls. In addition, classical methods of structural mapping, as sampling per scanline and description of parameters such as spacing, persistence and roughness of discontinuities will be employed. Finally, we intend to obtain a geomechanical and structural model applied to the mine slope stability, with a comparison and critical evaluation of the various methods employed. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VIANA, CAMILA DUELIS; ENDLEIN, ARTHUR; DA CRUZ CAMPANHA, GINALDO ADEMAR; GROHMANN, CARLOS HENRIQUE. Algorithms for extraction of structural models attitudes from 3D outcrop models. Computers & Geosciences, v. 90, n. A, p. 112-122, MAY 2016. (13/15862-8, 09/17675-5)

VIANA, CAMILA DUELIS; ENDLEIN, ARTHUR; DA CRUZ CAMPANHA, GINALDO ADEMAR; GROHMANN, CARLOS HENRIQUE. Algorithms for extraction of structural models attitudes from 3D outcrop models. Computers & Geosciences, v. 90, p. 11-pg., 2016-05-01. (13/15862-8, 09/17675-5)