Let’s look into the longest and deepest tunnel in the world.
The construction of the longest tunnel in the world was completed. 57-kilometer railway tunnel beneath the Alps, which now connects Zurich and Milan, was built… 20 years.
This investment was worth more than 6.5 billion euros. Let’s look into the longest and deepest tunnel in the world.
Swiss authorities said that on 24 August was completed the construction and installation of all technical elements of the longest tunnel in the world – the Gotthard tunnel. It is hard to imagine how many building materials went into building. Tons, thousands of tons. Before the contractors were standing tasks as and where it is profitable to buy wholesale sand concrete, to hire people for construction, etc.
The tunnel was opened on 2 June 2016. Now from Zurich to Milan by train can be reached in just 2.5 hours, that is an hour less than at present. This became possible due to the fact that at a depth of 2.5 kilometers under the Alps managed to drill a tunnel almost on a straight line, so trains will be able to develop a sufficiently high speed.
In July of this year, as part of the audit on the 13-kilometer stretch of tunnel between Bodio and Faido, the train made a trial trip at a speed of 220 km/h.
The last two months is a subsidiary company of the Swiss Railways carried out an inspection of the entire infrastructure of the tunnel, including electrical systems, communications, monitoring, and other objects. No violations were found.
The tunnel is part of the project Alp Transit Gotthard, which involves modernisation of the railway line through the Alps from Erstfeld to Lugano. On this line since 2009, built another tunnel, 15 km long Ceneri-Basistunnel, which is scheduled to open in 2019.
The highest point of the 57-kilometer Gotthard tunnel located at an altitude of 550 meters above sea level. It consists of two parallel at a distance of 40 metres separate “corridors” with a diameter of 9.14 meters.
In the tunnel the trains can travel at speeds up to 250 kilometers per hour.
57-kilometer Gotthard tunnel surpassed the previous record for length, 54-kilometer tunnel in Seikan Japan and connecting England with France, 50-kilometer tunnel under the English channel.
Swiss Gotthard is also the deepest so far built the railway tunnel. It is the deepest site is located 2,300 feet below ground.
During the construction of the tunnel were more than 2 thousand workers and experts, eight of them died tragically.
The Gotthard tunnel in which soon you can ride a train right under the Alps.
The Gotthard Tunnel.
© 2016, z-news.link. All rights reserved.