Subsurface modeling identifies risks ahead of Rio subway build
A new subway line that opened in Rio de Janeiro just before the 2016 summer Olympics relied on a detailed analysis of the subsurface to identify risks and avoid surprises during excavation.
Geologist Camila Nascimento Alves was a member of the team that used data from the city's Geotechnical Institute (Geo-Rio) to construct a 3D model of the subsoil in the Ipanema and Leblon neighbourhoods along the 16-km Line 4 subway. The model, created with Geosoft Target, used the consistency and density of the sediments and assisted the team in preparation for engineering work.
The new subway line features five stations running east-west along the oceanfront. The line is expected to carry three hundred thousand people a day by the end of 2016.