Proposta de checklist para inspeção em túneis de transferência hídrica como ferramenta de avaliação de risco

Abstract

Currently, it is possible to carry out remote monitoring of engineering works, however, on-site evaluation through field inspections will always be essential. One of the tools that assist in an inspection and, consequently, in the risk assessment process, is the checklist, which consists of a checklist, guiding the professional about points of attention in the structure whose existence must be verified. The use of this tool in dams is already well established. The tunnels, structures studied in this work, are used for direct passage through certain obstacles. The risks presented in underground works are relevant since it deals with geological materials. Risks are inherent to any activity that involves phenomena or materials of nature. In this context, the present work aims to propose a checklist for inspection in water transfer tunnels, as a risk assessment tool. Initially, a review of the literature on water transfer tunnels was conducted, seeking geological, geotechnical, economic, social, and environmental issues, to fully understand the dynamics of the structure. In addition, surveys were developed about accidents that occurred in tunnels and existing checklists for inspection in this type of structure. The checklist developed in this work consists of a spreadsheet, previously formatted for printing and field use, which has nine sections: Identification; Attribute legend; Infrastructure; Tunnel lining; Water; Drainage system; Instrumentation; Safety at work; Adverse problem. For each of the problems proposed in the document, spaces were made available for marking the attributes related to the situation of the anomalies, their magnitude, and the level of danger of each one, allowing a critical analysis in the field. The division of the checklist into sections proved to be a strong ally in the search for a comprehensive document that meets the greatest possible number of aspects surrounding the structure.