Under vatten tunnel CNN — After nearly four years of construction, China’s longest underwater highway tunnel is now open to vehicle traffic. At a length of kilometers ( miles), the Taihu tunnel. 1 världens längsta tunnel under vatten 2 22K. K views 1 year ago. How do you build an underwater tunnel and could we use one to cross between the continents? In this video we explore Boston to take a look at how engineers create these. 3 öresundsbron tunnel under vatten 4 An underwater tunnel is a tunnel which is partly or wholly constructed under the sea or a river. They are often used where building a bridge or operating a ferry link is unviable, or to provide competition or relief for existing bridges or ferry links. [1]. 5 Underwater tunnels are built using tunneling shields, tunnel boring machines, or immersed tubes. They are dug deep into the earth or sit on the ocean or river floor. The tunnels are usually buried beneath stone to prevent collapse. Underwater tunnels are used as an alternate means of transportation. 6 The Thames Tunnel is the oldest underwater tunnel in the world and opened back in People came from across the globe to witness the Thames Tunnel, because it was the first tunnel to be built under a navigable river through the use of tunneling shield technology, which was new at the time. 7 tåg under vatten london 8 Den längsta tunnelsträckan under vatten är den mellan Kungsträdgården till Södermalm och station Sofia. 9 Öresundstunneln. 10 Går under vatten, m u.h. Heggurtunnelen: Fylkesvei 92 Møre og Romsdal: Norddal: Längsta tunnel på fylkesvei. Freifjordtunnelen: Riksvei 70 Møre og Romsdal: Gjemnes, Kristiansund: Går under vatten, m u.h. Flenjatunnelen: E Sogn og Fjordane: Aurland: Eikefettunnelen: E Hordaland: Lindås. 12