Largest Tunnels of the world

 

    

1. Gotthard Base Tunnel, Switzerland (Alps) 

 The Gotthard Base Tunnel is a railroad burrow through the Alps in Switzerland. It opened on 1 June 2016, and full help started on 11 December 2016. With a course length of 57.09 km it is the world's longest railroad and most profound traffic burrow and the primary level, low-level course through the Alps. It lies at the core of the Gotthard hub and establishes the third passage associating the cantons of Uri and Ticino, after the Gotthard Tunnel and the Gotthard Road Tunnel. 

Overview 

Location : Switzerland 

Owner : SBB Infrastructure 

Project Start Date : 4 November 1999 

Completion : 11 Dec, 2016 

Opening date : 1 June 2016 

Starting Point : Erstfeld, canton of uri 

 End Point : Bodio, canton of Ticino 

 Length : 151.840 km 

2. The Seikan Tunnel, Japan 

 

The Seikan Tunnel is the world's longest passage with an undersea portion (the Channel Tunnel, while shorter, has a more extended undersea segment). It is additionally the second most profound passage and the second longest primary line railroad burrow after the Gotthard Base Tunnel in Switzerland opened in 2016. 

Overview 

Location : Under the Tsugaru Strait (Japan) 

Owner : Japanese Railway Construction, Transport and Technology Agency 

Opening date : 13 March 1988 

Length : 53.85 km 

Total Cost : 7 billion dollar 

3. The Channel Tunnel, England 

The Channel Tunnel is a 50.45-kilometer railroad burrow that interfaces Folkestone (Kent, England, UK) with Coquelles (Hauts-de-France, France) underneath the English Channel at the Strait of Dover. It is the main fixed connection between the island of Great Britain and the European terrain. At its absolute bottom, it is 75 m far beneath the ocean bed and 115 m underneath ocean level. At 37.9 kilometers, the passage has the longest submerged segment of any passage on the planet. As far as possible for trains through the passage is 160 km/h (100 mph). 

Overview 

Location : English channel (Strait of Dover) 

Opening Date : 6 May 1994 

Owner : Getlink 

Length : 50.45 km 

Cost : 4.65 billion dollar 

4. The Yulhyeon Tunnel, South Korea 

The Yulhyeon Tunnel is a railroad burrow in South Korea, which opened in December 2016, is as of now the world's fourth longest railroad burrow at 50.3 kilometers. The passage itself takes up about 82% of the absolute new line. The Yulhyeon Tunnel was assembled utilizing the New Austrian burrowing technique (NATM) and is intended for a most extreme speed of 300 km/h. The normal cruising speed is around 240 km/h because of the middle stop at Dongtan Station in the southern piece of the passage. 

Overview 

Location : South Korea (Seoul) 

Opening Date : December, 2016 

Length : 50.3 km 

5. Songshan Lake Tunnel, China 

The Songshan Lake Tunnel is a railroad burrow in China, which opened in 2016, is as of now the world's fourth longest railroad burrow at 38.813 kilometers. Songshan Lake Tunnel was the 4th largest tunnel until the Gotthard Tunnel was completed. 

Overview

Location : Dongguan 

Opening Date : 2016 

Length : 38.813 km 

6. Lötschberg Base Tunnel, Switzerland (Bernese Alps)

 

The Lötschberg Base Tunnel (LBT) is a 34.57-kilometer railroad base passage on the BLS AG's Lötschberg line slicing through the Bernese Alps of Switzerland somewhere in the range of 400 m (1,312 ft) beneath the current Lötschberg Tunnel. It runs between Frutigen, Berne, and Raron, Valais. 

Overview 

Location : Switzerland (Bernese Alps) 

Opening Date : 14 June 2007 

Length : 34.57 km 

7. New Guanjiao Tunnel, China (Qinghai) 

New Guanjiao Tunnel is a passage on the second line of Qinghai–Tibet Railway in Guanjiao Mountain, Qinghai area. It is double bores, twofold track rail burrow. The complete length of the passage is 32.645 km, which makes it the longest railroad burrow in China. China Railway First Survey and Design Institute is answerable for the plan. 

 Overview 

Location : Guanjiao mountain 

Opening Date : 28 Dec, 2014 

Length : 32.645 km