Análise do monitoramento de segurança de barragens de terra do aproveitamento hidrelétrico de Belo Monte: estudo de caso de diques do complexo no cenário do enchimento e operação

Abstract

In Brazil, an execution of earth dams or earth dams are quite common methods and used mainly to meet the demands of mining, irrigation or water storage for the production of hydroelectric energy. It is the importance or the monitoring and safety analysis of these rules to reduce environmental risks, safety factors, technological factors and observe the behavior and performance when planned. This dissertation seeks to understand dam safety monitoring procedures using items 01-A, 01-B and 01-C of the Belo Monte HPP intermediate reservoir by studying the different processes to ensure the safety of organizations. The methodological tracking adopted was carried out through the collection of technical information related to the studied structures, analysis of construction projects and verification of the methodologies adopted to contemplate the filling of reservoirs, reading of all or checklists that are field inspections, in addition to the data of the graphs, results of the auscultation instruments located in the body of the buses in the period of execution and operation that comprised the years 2015 to 2018. The type of research refers to a case study of documentary nature, since they are analyzed safety monitoring data in addition to the behavior of structures. The results reveal that, when compared to the safety procedures adopted at the international level, there is a shortage of the Brazilian safety inspection bodies, it refers to a more specific and clear methodology regarding the process of the first test of a reservoir, and in general lines , non-involved monitoring methods if associated, non-compliance in non-mandatory visual inspections or an instrumental reading outside the reference adopted as safety. However, when different non-conformities and / or anomalies present themselves both in visual inspection and in instrument monitoring, this action requires corrective action in the short term, as it is considered an unfavorable scenario in the security of the structure and associated with the strengthened correlation. to display a downstream of the structures.