The second DN560 pipeline allowing the BRL – Aqua Domitia project to cross the River Thongue is now installed.
This double 170 metre HDD crossing was drilled by Coquart & Fils, who commissioned OPTIMUM to provide geotechnical monitoring (G3 mission). As such, the engineers provided expertise at every stage to optimise the drilling process :
• During site preparation : geotechnical dossier analysis and definition of a programme of additional investigations to finalise engineering plans
• During drilling of the first pilot hole : deepening the HDD profile following observation of a geological deviation causing drilling fluid losses
• During boring : optimization of the boring sequence
Effective teamwork, based on mutual trust, once again led to a great result.
