A sizable excavator with an amazing arm is stationed outside the NiBox in Mᴏɴᴀᴄᴏ and descends into the ocean’s depths to retrieve the vases using a sealed ecological dump to prevent material suspension. The Principality of M is doing everything in its power to minimize the environmental impact of its extension project. The future Anse du Portier area is a target that is currently taking shape during the preliminary work at the underwater construction site.
The big seaport in Marseille is currently producing 18 concrete caissons, which will be delivered to the site soon. According to Bouygues Construction, a hydraulic excavator called a Mimar Sinan, which is comparable to a Tiger dredger, was used to initially remove containers of filthy material. The ecological container and cable crane on this excavator prevent the extracted items from floating and mixing with the water.
The Envisan company’s specialized treatment facility in La Seyne-Sur-Mer received these sediments via boat. The procedures started on April 18, 2017, and they were completed on November 3, 2017. Unpolluted sediments were removed using a suction dredge on the Francis Beaufort ship, which can work on seabeds up to 56 meters deep, in parallel with the first phase. According to Bouygues Construction, this dredge operates without overflow, which means it does not reject the water it suckers up along with the sediments and does not so cause the river’s turbidity to grow.
The sediments are then transported by the dredge to a spot precisely designated to prevent encroachment on marine life and are finally deposited beneath the sea. This location is 200 meters below sea level and is within M’s exclusive economic zone. The sediments are dumped 77 meters below the surface to prevent the production of turbidity. By the end of February 2018, this procedure, which got under way on October 12th, 2017, is anticipated to be finished.
In the video below, you can see how a big excavator works on the M Seafront Extension, which has a low environmental impact.
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Video resource: flash1088