The longest tunnel in the world and the longest tunnel in the world

As of 2021, the longest tunnel in the world is the Gotthard Foundation Tunnel.

On 1 June 2006, the Gotthard Base Tunnel, which runs through the Alps and is 57 km long, was officially opened in Switzerland, making it the world's longest railway tunnel.

The Gotthard Mountains lie in the heart of the Alps. The Gotthard Base Tunnel is the second tunnel through the Alps and is located deep in the mountains. Located in the heart of the Alpine Railway Shinkansen, ABB's latest energy-saving technology will ensure the operation of the tunnel ventilation system and provide support for the infrastructure of the rail network.

Construction History.

As early as the autumn of 1954, the Highway Committee of the Swiss Federal Ministry of the Interior** proposed a plan for the construction of the Gotthard Road Tunnel. In 1960, the Federal Parliament approved the plan.

On 25 June 1965, the Commission for the Construction of the Gotthard Road Tunnel was established. It is entrusted by the Federal Highway Department and the cantons of Uri and Ticino to develop the drafts, construction drawings and tenders, and supervise the works. On May 15, 1968, the Confederation** selected two out of sixteen different programs.

An 85.3 km long tunnel is stretching out in the mountainous region of Liaoning in northeastern China. When completed, the 8-meter-diameter diversion tunnel will surpass the 57.6 km Gottharde Tunnel in Switzerland, making it the longest tunnel in the world.

Hello, currently the Lodal Tunnel in Norway is the longest tunnel in the world. The Lordal Tunnel is the longest road tunnel in the world in the western part of Norway with a total length of kilometres. Construction began in March 1995 and was officially opened to traffic on November 27, 2000, with a total cost of about US$100 million.

August 10, 2013).

The longest tunnel in China is the Qinling Zhongnanshan Road Tunnel on the Xikang Expressway in Shaanxi. With a total length of kilometers, the total length of the two tunnels is currently the longest road tunnel in China. It is a transportation hub connecting the Yellow River Economic Circle and the Yangtze River Economic Circle, and an important part of the Xi'an-Ankang Expressway of Shaanxi's "three vertical, four horizontal and five radiation" highway network.

Located in the central part of Shaanxi Province, China, the Qinling Zhongnanshan Highway Tunnel starts from Qingcha Village, Wutai Street, Chang'an District, Zhengchang'an, and crosses the west of Zhongnanshan along the west side of the Xikang Railway to the south, and ends at Xiaoyukou, Yingpan Town, Zhashui County, Moluo City, Shangqin. The route through the Qinling Zhongnanshan Highway Tunnel is the Baotou-Maoming Expressway.

The construction of the Qinling Zhongnanshan Highway Tunnel started on January 8, 2001 and was completed and put into operation on January 20, 2007. The total investment of the project is 100 million yuan.

The completion and opening of the Qinling Zhongnanshan Highway Tunnel has facilitated the masses to travel safely and quickly, saved transportation costs, and is of great significance to promoting the implementation of the strategy of large-scale development of the western region and the economic exchanges between Shaanxi Province and neighboring provinces and cities.

The longest tunnels in the world are as follows:

1.Guangzhou Metro Line 3 (China).

Guangzhou Metro Line 3 has a total length of kilometers. It is currently the longest underground high-speed transit tunnel in the world. This also means that the metro station has a staggering number of connecting stations.

From Tianhe Passenger Terminal to Panyu Square Station. As of 2012, about 100 million passengers used it. Amazing volume!

Too many passengers! Too long a trip!

2.Beijing Metro Line 10.

Beijing Metro Line 10 is the second ring line subway in Beijing, and is a very important line in the Beijing subway network. Beijing Metro Line 10 is also the world's second-longest underground transportation hub. And it is still developing.

3.Seikan Tunnel (Japan).

The Seikan Undersea Tunnel is an undersea tunnel dug in the Tsugaru Strait between the Aomori area of Honshu and the Hakodate area of Hokkaido. With a total length of 54 kilometers across the Tsugaru Strait and a 240-metre undersea tunnel, it is currently the deepest and third longest railway tunnel in the world, but will soon be replaced by the Gotthard Tunnel in Switzerland.

The Gotthard Tunnel, which is expected to be completed in 2016, will be the third longest tunnel in the world.

4.Channel Tunnel (UK, France).

Opened in 1994, the UK-France Channel Tunnel, which connects the UK and mainland Europe (i.e. France), is an undersea railway tunnel that crosses the Strait of Dover between Britain and France, also known as the Straits Tunnel. It stretches from Folkestone in the west to Calais in France in the east, with a total length of 50 kilometers and an underwater length of 38 kilometers, making it the world's longest undersea tunnel. The paragraph is imitated.

The "Eurostar" train jointly operated by the railway departments of Britain, France and Belgium has a speed of 300km h; The Eurotunnel has also designed a special section train for transporting road vehicles, called "Le Chee Tuo". Cars of all sizes can pass through the English Channel around the clock, thus connecting the European road network. People praised this project as "a dream of 200 years of strait change".

5.Seoul Subway Line 5 (South Korea).

Seoul Subway Line 5 is a line of the Seoul Subway, which is part of the Seoul Metropolitan Railway Corporation. The route traverses the city of Seoul and is the fifth longest tunnel in the world.

Dear, the world's longest tunnel is located in Switzerland, Europe Gotthard Base Tunnel, this tunnel broke the record of the kilometer of the Seikan Tunnel in Japan, once again witnessed the miracle of human engineering, achieved the goal of 57 kilometers of tunnel construction, narrowed the distance between European countries, and made the friendship of European peoples to a higher level, of course, when building this tunnel, encountered a lot of difficulties, with the wisdom of engineers and builders to overcome one difficulty after another.