Geotechnical engineeringTunnels and underground structures

Brief description
and characteristics of the project

The project involves building a wastewater drainage tunnel between St Genis Pouilly in France and Choully in Switzerland.

Mission

GEOS Ingénieurs Conseils carried out the complete project management mission as the lead contractor on behalf of the Groupement Local de Coopération Transfrontalière (G.L.C.T.).

These studies included the following services:

  • Geotechnical monitoring, front-end surveys ;
  • All the tasks required under the MOP law (AVP, PRO, ACT, DCE, VISA, DET);
  • Project management, schedule management and binational aspects (customs, tax, environment, employment law, etc.).
  • Project Owner : Groupement Local de Coopération Transfrontalière (G.L.C.T.)
  • Mission : Maîtrise d’œuvre complète (AVP, PRO, ACT, VISA, DET, AOR)
  • Cost of the mission : 463 k€ HT
  • Mission date : 2006-2010

Technical specifications:

  • a 3000 m long, Ø 2500 m east tunnel;
  • 6 collectors Ø 1000 to 1500 with a total length of 778 m ;
  • 4 access shafts.