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Universidade Federal do Rio Grande do Norte (UFRN) 2021

Cenários de ruptura da barragem Passagem das Traíras : uma contribuição para a redução de riscos de desastres tecnológicos e segurança populacional em Caicó/RN/B

Souza, Jhonathan Lima de

Titre : Cenários de ruptura da barragem Passagem das Traíras : uma contribuição para a redução de riscos de desastres tecnológicos e segurança populacional em Caicó/RN/B

Auteur : Souza, Jhonathan Lima de

Université de soutenance : Universidade Federal do Rio Grande do Norte (UFRN)

Grade : Mestrado em Geografia 2021

Résumé partiel
Water is a vital element for mankind, and for this reason, maintaining access to water over time becomes a fundamental practice, especially in regions with irregular rainfall patterns. Thus, since old times, populations have the habit of building dams, which over time have undergone different construction methods and processes. These structures normally follow the accuracy that civil engineering requires, but with the lack of repairs, the dam has failed in its infrastructure, either for weather reasons or for human failures. This fact represents a technological risk, due to the absence or bad use of robust techniques, for the populations in the downstream valleys. This is the case of the Passagem das Traíras dam, located in the Semi-Arid region, in the interior of Rio Grande do Norte. The structure of this dam has spent more than 24 years without significant interventions in its structure, and in 2015 the National Water Agency found structural pathologies in the dam. Hence, in 2018 the risk of Attention to Alert of rupture in the dam was increased, whose volumetric capacity is 49.7 million cubic meters, representing a risk for the city of Caicó / RN, located in the valley on the River Seridó with a population of approximately 60 thousand inhabitants, located about 14 km downstream of the dam. So, the main objective of this study is the analysis of the dangers of disaster from a possible rupture of the Passagem das Traíras dam in the municipality of Caicó/RN, within the debate of knowing the consequences that the city can cause. To achieve the goals, a theoretical discussion was held on the concepts of risk, danger and vulnerability with a focus on technological disasters and institutional and physical vulnerability. In addition, Kuperman’s (2001) methodology was adapted to the reality of this study, the Potential Hazard Indicators, Real State of the Dam and Behavior Index, were constructed based on the substitution of the weights, according to the criteria presented in the original methodology, for the attribution of the index values, technical reports from ANA (2005 ; 2015 ; 2018 ; 2019) and SEMARH (2016 ; 2019) were consulted, and according to each justification of the variables, the index tables were filled out.

Mots Clés  : Cenários de desastre tecnológico ;Segurança de barragem ;Ordenamento do território ;Passagem das Traíras ;Caicó/RN

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Page publiée le 19 décembre 2021