Proposta de metodologias de gestão de risco para túneis de transferência hídrica a partir de dados de inspeção de campo

Abstract

In the Brazilian Northeast, due to the persistent conditions of water scarcity in various regions, it becomes important to undertake extensive water infrastructure projects that encompass the construction of numerous channels, dams, pipelines, and water transfer tunnels. Ensuring the proper functioning of these structures involves various prevention and control measures, among which the monitoring through periodic on-site inspections stands out. Currently, in Brazil, there are no official standards for risk management and inspections of water transfer tunnels, which hinders the identification, assessment, and mitigation of risks, affecting the safety, efficiency, and sustainability of these structures, and consequently, access to water, since they are an integral part of the works that conduct water for supply. Therefore, this work proposes risk management methodologies for water transfer tunnels based on field inspection data. The research is structured around four articles that meet specific objectives and address: the application and validation of the checklist model for inspection in water transfer tunnels developed by Silva (2022); the proposal of a decision-making methodology for choosing risk analysis methods in geotechnical works; the presentation of a risk matrix model for risk assessment in water transfer tunnels; the presentation of a proposed method for calculating the Quality Index for water transfer tunnels; the application of the proposed tools in the Boa Vista tunnel, located in the municipality of Crato, in the state of Ceará; and the proposal of a manual with guidelines for conducting inspections in water transfer tunnels. Overall, this dissertation provides robust tools, guidelines, and discussions that contribute to the understanding and improvement of risk management processes in water transfer tunnels. By presenting all these tools, the dissertation enhances the ability to conceive and implement a more homogeneous and effective risk management system for water transfer tunnels, thus contributing to the monitoring and maintenance of these structures and consequently to the strengthening of water security.