No trenchless crossing is too small to benefit from the expertise of specialist engineers. Further proof of that just a few days ago as INEO’s 123-metre-long HDD was successfully completed on the French Atlantic coast, a crucial step in the connection of the Yeu – Noirmoutier Offshore Windfarm.
The connection project was in difficulty until OPTIMUM was called upon to solve the problem on this particular section. Trenchless specialists ran targeted and more appropriate geotechnical investigations and conducted a risk analysis to ensure complete understanding of the job site’s complex geology, notably the monogranular sands, liquefaction potential and underlying brackish water table.
OPTIMUM engineers then redesigned the project, whilst sticking to the client’s key constraints, namely an HDD running along the same drill path, passing under a road and a canal. Rather than one large bundle, the crossing was reconfigured into 2 sets of 4 parallel drills, allowing the reaming diameters to be reduced, which in turn reduced the risk of hole collapse.
Proud to have enabled INEO to advance on another renewables project; mission accomplished.
