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Grota Funda Tunnel: a model of technology

The connection between Recreio and Guaratiba districts is 80% concluded.

7 de March de 2012

One of the most important urban interventions in the city of Rio in the past few decades is almost ready. Now in its finishing phase, the Grota Funda Tunnel is very close to the visual configuration it should have after ready. And it already reveals technological innovations that no other tunnel in Rio has.

It will be 1100 meters long and it will be the first one adapted to ABNT (Brazilian Technical Standards Association) safety guidelines. It is being called ‘the star of the Transoeste’, according to engineer Alexandre Risso, responsible for the works that will connect Barra da Tijuca to Santa Cruz and Campo Grande.

“There will be protection screens at the Recreio and Guaratiba portals in the case of rains and mudslides so the entrances to the tunnels will not be closed off, like what happened with the Rebouças Tunnel a few years ago,” explains Risso.

 

Each side of the tunnel will also have a control and safety substation that will monitor it 24 hours a day. They will both have their own generators and a technical support area for tunnel rescue teams.

They are also installing hydrants for fighting fires and galvanized support trays for electrical and illumination systems. The works will also have another modern touch: the installation of side panels painted with paint imported from Switzerland and used in all the European tunnels.

– These paints are easy to clean and help with the illumination, thus guaranteeing top level safety and quality. It will also use LED illumination, a novelty for tunnels in Rio de Janeiro -, says the engineer.

With nearly 80% of the works already completed, the current phase involves the installation of the technology needed to make the Grota Funda Tunnel a model. In one section, it is already possible to observe the low segregation walls for the BRT (Bus Rapid Transit) lanes, which will be used by the Ligeirão buses.

– We have made some improvements in the already existing tunnels, with coatings and changes in illumination. But this one here was already right from the start. It will be a model tunnel for future tunnels and the improvement of those already existing in the city -, concludes Risso.

7 de March de 2012

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