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Navigating Chalk, Silt, and Steel: HDD canal crossing

Navigating Chalk, Silt, and Steel: HDD canal crossing

by Rachael Bower-Yekpe | Jul 23, 2026 | Electricity

Proud to share the successful completion of a not-so-straightforward HDD canal crossing. Carried out with SYSTRA, on behalf of project owner RTE, the crossing will now enable the connection of Khulmann’s site in northern France. The environment for installing the 225...
Trenchless expertise in action in southwest France : 50+ crossings completed

Trenchless expertise in action in southwest France : 50+ crossings completed

by Rachael Bower-Yekpe | May 28, 2026 | Oil & Gas

What began in 2020 as a truly ambitious project — replacing 70 km of Teréga’s gas transmission network — has now reached a defining moment: every trenchless crossing is complete.Over time, OPTIMUM moved from site analysis, feasibility studies and design engineering...
Roubaix Nord : A project made for trenchless engineering

Roubaix Nord : A project made for trenchless engineering

by Rachael Bower-Yekpe | Apr 30, 2026 | Electricity

Supporting RTE’s network renewal programme in northern France, constructing almost 2km of trenchless crossings to connect key substations. As always, the challenge is how to build the crossings in dense urban environments without disrupting daily life.While OPTIMUM...
Precision trenchless engineering: HDD success in Lille

Precision trenchless engineering: HDD success in Lille

by Rachael Bower-Yekpe | Mar 19, 2026 | Electricity

Supporting RTE in its network-upgrade programme requires not only equipment but also precision engineering.Beneath a five-way road junction in Lille, a 3-metre‑diameter wastewater pipe dominated the underground space. It was impossible to move and impossible to bypass...
From standstill to success: HDD turnaround in 5 weeks !

From standstill to success: HDD turnaround in 5 weeks !

by Rachael Bower-Yekpe | Feb 5, 2026 | Electricity

To complete the connection to Endesa’s solar power plant in Puertollano, southern Spain, only one task remained: a 200-metre-long trenchless crossing under the Madrid-Seville high-speed railway line and the adjacent Ciudad Real-Puertollano-Badajoz railway. However,...
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Articles récents

  • Navigating Chalk, Silt, and Steel: HDD canal crossing
  • Double microtunnel : Engineering beyond the obvious
  • François Gandard named FSTT workshop lead
  • Trenchless expertise in action in southwest France : 50+ crossings completed
  • Roubaix Nord : A project made for trenchless engineering

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