How the Fehmarnbelt Tunnel is being built 

Really this is amazing and very creative...this will be written in history like the pharaonic pyramids

Very impressive! Looking forward to cross that tunnel some day.

What a great project..willing to join with this 😊

Very cool project.

I really do hope they make the seals between the elements re-expandable. No matter what you do, there wll always be some movement after the elements are placed, and so these seals should be at least minimally flexible, with the ability to contract and expand. Also, a mechanism for forced contraction would be a neccesity as well. Once trucks and other heavies start moving through the tunnel, it will sink into the soil a little at least, and thus from the start of the tunnel you need a little extra to compensate for any such motion, which will happen over several miles, and thus yield significant differences in length of said distance, which may be as high 1 meter difference on each end. If the forced contraction mechanism also has a tensile gauge, they can check for motion by checking the tensile gauges. If they change there's motion, if not, no motion. They can either use a cable system that allows the pieces to simply press into each other, no matter the motion, or have each piece hook into the next and pulling that in. I calculated roughly 2cm by temperature differences alone for each piece, which happens at least yearly, but to a smaller degree daily. I'd add at least one more piece on both ends, to compensate for yearly sinking, or at least a part of a piece, like 10 meters long. As the gap widens, these pieces can fill the gap, while the gaps they themselves leave can be filled with regular concrete, since this would be on dry land.

Comparing this to Eurotunnel, I really don't know which one is more insane. To dig a dry cave under meters of soil under meters of water, trusting you will be able to handle the structural instabilities, or to transport and install a flat structure in a trench prepared under the water, made smooth enough to don't produce structural stress on the tons that will compress it...

This video is giving me tunnel vision.

Great work

How do they get the bulkheads out after the water is removed? I was waiting to see that...

It looks simple. I'll try it at home.

sangat informatif, terimakasih atas pemaparannya dan mudah dimengerti

Iraq have similar project of immersed tunnel with 2.5km long, 34m beneath the surface, 4 motorways lane for each side. Expecting to be done by 2025, the cost of the project is 86$ million.

Parabéns ...

I don't understand how do they connect the tunnel sections . Is it just a matter of screwing thousands of thick bolts with a seemingly thick incorrosive gasket between them ?!!! Only a detailed animation will make me comprehend .

AMAZING!

uuuuuuuuuuaaaaaaaaauuuuuuu Topíssimo! Projeto bem audacioso...

Nice

Wow!!!

How did they level out the seabed? What a huge undertaking....

The ocean is rising and they keep putting more and more structures under water...

What about ventilation? Emergency exists if there's a car accident? What if the sea level moves, earthquakes, etc. A ton of questions unanswered...

Will there be a gas station in the middle of the tunnel?! Maybe with a nice panoramic glass above to see the fishes and to eat my schnitzel in a proper environment! 😁

Loucura .... mesmo havendo uma tecnologia formidável, em algum momento haverá tragédia

What happens to the factory and dock? So fascinating, I know my 2030 vacation destination!

Who is the narrator of this video clip?

👌

Anyone else get XCOM vibes from the tunnel factory?

if only this could be done between sweden and åland

You guys think 2029 will be there human on earth!

217m x 9m x 40m = 78.120 cbm weight: 73.000 t ? That would be a ship?

In the very last clip, why do you show only one train track? The elements have two train tubes.

DK: Jeg glæder mig til at gå gennem tunnelen, i stedet for båden SWE: Jag ser fram emot att få åka genom tunneln, istället för båten ENG: I look forward to going through the tunnel, instead of the boat GER: Ich freue mich darauf, durch den Tunnel zu gehen, anstatt durch das Boot

Concrete is not eternal... How this tunnel's structure will the maintained once the elements will be underwater and covered by rocks and sand ?

In case anyone else is wondering how they actually seal the pieces together: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2Xkyyc9PlQA.html

big thanks to China for inspiring mega infrastructure projects like this. Lets hope Europe can pull this off within our live time.

Next project: Tunnel from New York to London.

The events of the past few weeks have given me food for thought. After Nord Stream and Crimean Bridge one can probably say that a bridge would be much safer. An act of terrorism like the one on the Crimean Bridge would cause a massive catastrophe in a tunnel, even if there were no flooding. The blast would rush through the entire tunnel and cause immense destruction.

I think I hate the word "element" now. Switch it up from time to time throughout the video! lol

I am looking forward to not have to use the heavily over-priced ferry. I hope they can finish earlier....

2029 ??? I´m wondering why did they wait so long to make this obvious connection between central europe and Scandinavia. There´s only one ferry line which is called Scandiline which has always enabled to cross Rodby to puttgarden so far. Scandalous and very expensive.

What about border control ❓

IM A TUNNEL

Switched the sound off, played this instead: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Va297erJjJ4.html ...oddly satisfying 😁

robi wrazenie

One of the most controversial projects on this planet if you ask me. The amount of money this project will cost is ridiculous. Especially when you consider the time saving/cost ratio, on an exceptionally traditional route that has been working fine all these years using the ferry. The money used here could have gone to other more urgent needs in society. Don't get me wrong, this project is truly the next level of outstanding engineering. But a vastly unnecessary one.

😛

Just immerse only ..that is genius.. and one of the sign of the end of the world...

totally amazing, but how do you ensure the security to prevent any terrorist?

Why does "FemernAS" believe that background "music" is needed while the narrator is speaking. That makes no sense.

Fehmarn is NOT the "largest". The ShenZhong Link in Guangdong southern China has immersed tunnels that are over 70 meters wide while the Fehmarn tunnels are 40 meters wide.

In case anyone else is wondering how they actually seal the pieces together: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2Xkyyc9PlQA.html