3D visualisation of the tunnel model for Lot 3 of Line C of the Toulouse Metro
3814 m of Tunnel Beneath a Densely
Populated Urban Area
Lot 3 includes drilling 3814 m of tunnel beneath a densely populated urban area, as well as civil engineering work for the construction of four underground stations at a depth of 24 to 39 m, plus three ancillary structures. The joint venture has proposed using the “Variable Density Conveyor” method, an innovative tunnelling solution that will help cope with the challenges presented by different soil conditions. BIM (Building Information Modeling) is being used for planning and executing the project.
Fibre-Reinforced Concrete Segments To Keep the CO2 Footprint Low
The joint venture’s bid placed particular emphasis on sustainability: the use of fibre-reinforced concrete segments will keep the CO2 footprint of the project as low as possible, while the trees on the site will be protected and preserved throughout the entire construction period. In addition, 98% of the excavated material will be recycled. Christian Späth, Head Division Civil Engineering at Implenia, is excited about the project: “Alongside the lots of the Grand Paris Express and TELT (Lyon–Turin), this is another large and complex infrastructure project for our team in France. It fits our strategy and is an ideal opportunity for us to contribute our many years of experience and our comprehensive expertise in tunnelling and associated civil engineering disciplines.”