ABSTRACT
This article aims to contribute with a brief presentation of the main actions and results acquired, both in the development of the project and in the execution methods during the underground excavations for the execution of the structure. The dimensioning of the drainage systems, ventilation and emergency exits in the construction and operation phases, together with the specificities and geological and geotechnical aspects of the Serra do Mar region, were crucial for the development of the final project. Allied to this, the best engineering techniques for structural reinforcement and quality reconditioning of the adjacent massif were applied.
