New Guanjiao Tunnel

New Guanjiao Tunnel

A portal of New Guanjiao Tunnel during construction in 2011
Overview
Line	Qinghai–Tibet Railway
Location	Guanjiao Mountain
Coordinates	37°8′40″N 99°4′59″E / 37.14444°N 99.08306°E / 37.14444; 99.08306
Start	37°10′58″N 99°10′38″E / 37.18278°N 99.17722°E / 37.18278; 99.17722
End	37°0′33″N 98°52′50″E / 37.00917°N 98.88056°E / 37.00917; 98.88056
Operation
Work begun	2007
Opened	28 December 2014 (2014-12-28)
Traffic	train
Technical
Length	32,645 metres (107,103 ft)
No. of tracks	two single
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Electrified	electrified
Operating speed	160 km/h
Highest elevation	3,381 metres (11,093 ft)
Lowest elevation	3,324 metres (10,906 ft)

New Guanjiao Tunnel ^[1](Chinese: 新关角隧道; pinyin: Xīn Guānjiǎo Suìdào) is a tunnel on the 2nd line of Qinghai–Tibet Railway in Guanjiao Mountain, Qinghai province. It is dual-bored, double-track rail tunnel. The total length of the tunnel is 32.645 km (20.285 mi), which made it at the time of completion the longest railway tunnel in China and fourth-longest in the world.

China Railway First Survey and Design Institute is responsible for the design. The New Guanjiao Tunnel was designed for two parallel single-track tunnels with speeds of up to 160 kilometres per hour (99 mph). The total construction duration was projected to be 5 years. The tunnel was bored in difficult geological conditions and high altitude, exceeding 3,300 metres (10,800 ft) above sea level. The construction started in 2007 and was completed in April 2014.^[2] The tunnel was opened on 28 December 2014.^[3]

The tunnel's northeastern portal (37°11′00″N 99°10′40″E / 37.1834°N 99.1778°E / 37.1834; 99.1778) is in Tianjun County, the southwestern portal (37°00′34″N 98°52′50″E / 37.0094°N 98.8805°E / 37.0094; 98.8805) is in Ulan County.

References

Wikimedia Commons has media related to New Guanjiao Tunnel.

This page was last edited on 23 April 2024, at 16:08