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Segurança de barragens: estudo de caso de rompimentos de estruturas de rejeitos em Minas Gerais

Authors: Barbosa, Liliana Gardênia Magalhães; Amaral, Diego Roger Borba;

Segurança de barragens: estudo de caso de rompimentos de estruturas de rejeitos em Minas Gerais

Abstract

Resumo: O trabalho constitui, inicialmente, de um estudo acerca do desastre do rompimento das barragens de mineração em Minas Gerais, ressaltando principalmente as barragens da Samarco, localizada no distrito de Bento Rodrigues, município de Mariana e da Vale S.A. localizada no ribeirão Ferro-Carvão, na região de Córrego do Feijão, no município de Brumadinho, a 65 km de Belo Horizonte. Os acidentes foram explorados a fim de evidenciar os principais motivos que levaram ao rompimento das barragens, utilizando-se artigos e laudos já publicados. O objetivo desse trabalho foi analisar o conjunto de fatores que podem ter contribuído para o acidente. Os incidentes foram abordados visando evidenciar todos os impactos ambientais, bem como os impactos socioeconômicos na região. Este estudo serve também para o levantamento de ações corretivas e mitigadoras, desenvolvidas posteriormente. A metodologia abordada através de estudos bibliográficos, que possibilitou o levantamento das possíveis causas dos acidentes ocorridos, ajudando a determinar as ações capazes de prevenir o rompimento de uma barragem, ou ao menos minimizar seus impactos socioambientais, no caso da ruptura. Os resultados foram: relatar os parâmetros que contribuem para o rompimento dessas estruturas, e os fatores necessários para a segurança delas, bem como as causas do rompimento das barragens estudadas. Concluiu-se que falhas na fiscalização e no monitoramento contribuem para a ocorrência desses eventos, para evitar que esses acidentes ocorram, essas barragens devem estar cadastradas de acordo com PNSB, classificadas de acordo seguindo os padrões de segurança, com essencial instrumentação e periodicidade constante.

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Keywords

: Barragens. Rompimento. Segurança.

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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