Banca de QUALIFICAÇÃO: LUCAS ANDRADE E SOUZA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUCAS ANDRADE E SOUZA
DATE: 24/06/2022
TIME: 14:00
LOCAL: Araxá - MG
TITLE:

TAILING DAM STABILITY ANALYSIS - CASE STUDY

KEY WORDS:

Mining; Dam; Geotechnics; Slope Stability; numerical analysis; limit equilibrium; Probabilistic Analysis; Deterministic Analysis.

PAGES: 36
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUBÁREA: Lavra
SPECIALTY: Lavra a Céu Aberto
SUMMARY:

The stability analysis aims to assess the possibility of movement of the massif on an artificial or natural slope. The analysis is performed by comparing the mobilized shear stresses and the shear strength along a potential failure surface. In the deterministic approach, an estimate is used for each input parameter, but it appears that in nature the properties of materials have a certain tendency to be more variable. Faced with this variability, oscillations may occur in the values adopted for the loads and geotechnical parameters. Given this assumption, the incorporation of statistical and probabilistic methods become possible tools to deal with the risks present in geotechnical works, since they incorporate the variability of the parameters and loads of the projects, based on the statistical distributions, which is considered the frequency of data occurrences, which makes it possible, finally, to calculate the risk of failure or the reliability of the structures. The aim of this research is to evaluate the safety of a tailings dam located in the Iron Quadrangle of Minas Gerais, which failed in 2019, comparing the values of Probability of Ruin with those of Safety Factor, considering as a premise the geotechnical parameters assumed in the study original, based on the field and laboratory investigations carried out, for the assumed critical section. Concomitantly to the above, it is expected to perform a parametric sensitivity analysis of the variables that influence the value of the Safety Factor in a deterministic analysis.

BANKING MEMBERS:
Interno - THIAGO BOMJARDIM PORTO
Interno - MARIO GUIMARAES JUNIOR
Externo ao Programa - ARMANDO BELATO PEREIRA
Externo à Instituição - DANIEL SILVA JAQUES - UFOP