Eiffage Énergie's teams, appointed by the Bouygues Construction and Soletanche Bachy consortium, took part in transporting the TBM used to carry out the northern extension of Metro Line 14 from Porte de Clichy to Mairie de Saint Ouen.
The fast, automatic Line 14 on the Paris underground network is to be extended from Saint Lazare Station to Saint Ouen, with the aim of reducing congestion on Line 13. Four stations (Pont Cardinet, Porte de Clichy, Clichy Saint-Ouen and Mairie de Saint-Ouen) are to be upgraded, enabling the line to serve the city's north-western districts. The development of this section of the Grand Paris Express network nevertheless requires excavation work, carried out by a TBM named Solenne (the TBM are traditionally named after one of the line's agents).
After transporting this colossal machine (85 metres long, 8.91 metres in diameter and 1,230 tonnes in weight) to the site, Eiffage Énergie's teams removed traffic light poles and overhead lines for the arrival of the convoy and replaced them after it had passed.
The TBM arrived at its destination without incident, and can now continue its work, boring 7.75-metre diameter tunnels to enable underground train passage on the usual two tracks.
This fast-track work was carried out over four non-consecutive nights between 17 January and 15 February 2017.
Credit: © Thenon - Artelia