{"id":9775,"date":"2026-04-30T10:00:00","date_gmt":"2026-04-30T08:00:00","guid":{"rendered":"https:\/\/www.optimum-te.com\/?p=9775"},"modified":"2026-05-28T11:30:47","modified_gmt":"2026-05-28T09:30:47","slug":"roubaix-nord-a-project-made-for-trenchless-engineering","status":"publish","type":"post","link":"https:\/\/www.optimum-te.com\/en\/electricity-en\/roubaix-nord-a-project-made-for-trenchless-engineering\/","title":{"rendered":"Roubaix Nord : A project made for trenchless engineering"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; theme_builder_area=&#8221;post_content&#8221; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221;][et_pb_row _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p><strong>Supporting RTE\u2019s 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.<\/strong><\/p>\n<p><\/p>\n<p>While OPTIMUM engineers initially analysed 10 potential crossing sites (at the G1 PGC study phase), 5 sites were ultimately selected. Passing beneath roads, rails and waterways, each crossing consists of a double underground cable 225 kV \u2013 sometimes parallel, sometimes not \u2013 just to make things a bit more interesting !<\/p>\n<p><\/p>\n<p>Two HDD crossings in Tourcoing \u2013 both drilled by COQUART \u2013 are now complete\u00a0:<\/p>\n<p><\/p>\n<ul>\n<li>2 x 150 m long HDDs drilled under a busy four-lane road and the T1 tramway lines.<\/li>\n<li>1 x 130 + 1 x 195 m long HDDs. These drills had to pass not only beneath the Canal de Tourcoing, but, crucially avoid its bridge foundations, while remaining within public land and minimising impact above ground. The resulting design placed the first drill 6 m under the canal and the second an additional 5 m below that, in total 12 m beneath the canal bed.<\/li>\n<\/ul>\n<p><\/p>\n<p>Great teamwork, finishing drilling operations ahead of schedule.\u00a0<\/p>\n<p><\/p>\n<p>Attention now turns to the remaining three crossings\u00a0; watch this space\u00a0!<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Supporting RTE\u2019s network renewal programme in northern France, constructing almost 2km of trenchless crossings to connect key substations. <\/p>\n","protected":false},"author":2,"featured_media":9770,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[49],"tags":[80],"class_list":["post-9775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electricity-en","tag-hdd-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - 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