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Extension in the Sea of Mᴏɴᴀᴄᴏ – Big Excavator in water

Here, in front of the Nibox in Mᴏɴᴀᴄᴏ, a large excavator with a remarkable arm descends into the ocean’s depths to retrieve the vases using a sealed ecological dump that prevents the suspension of materials. The Principality of Mᴏɴᴀᴄᴏ is working hard to minimize the environmental impact of its extension project. The planned Ase du Portier district is a target that is currently taking shape during the preliminary work at the underwater construction site.

The vast seaport in Marseille is now producing 18 concrete caissons, which will be delivered to the site. According to a recent report by Bouygues Construction, tiger-dredger-like Mimar Sinan hydraulic excavators were used to initially remove containers of toxic material. This specific excavator has a cable crane and an ecological container to prevent removed materials from floating and mixing with the water.

These sediments were transported by boat to La Seyne-Sur-Mer, Fʀᴀɴᴄᴇ, where Envisan’s specialized treatment facility is located. The procedures started on April 18, 2017, and were finished on November 3, 2017. Unpolluted sediments were taken out concurrently with this initial phase using a suction dredge on the Francis Beaufort ship, which can operate on seabeds as deep as 56 meters. According to Bouygues Construction, this dredge operates without overflow, or in other words, without rejecting the water it suckers up along with the silt, preventing it from raising the river’s turbidity.

The sediments are then transported by the dredge to a spot under the water that has been picked specifically to avoid encroaching on the marine flora and animals. This location is 200 meters underwater and is within Mᴏɴᴀᴄᴏ’s exclusive economic zone. To reduce the development of turbidity, the sediments are released 77 meters below the surface. This procedure, which started on October 12th, 2017, should be finished by the end of February 2018.

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BY:https://jadelnews.net/2022/07/26/extension-in-the-sea-of-mᴏɴᴀᴄᴏ-big-excavator-in-water/