According to the national enterprise credit information publicity system, sichuan-tibet railway co., ltd. was officially established on January 10, 2020, with a registered capital of 200 billion yuan, and is 100% owned by China national railway group co., LTD.

At a recent work conference, China railway corporation revealed that it will push forward the construction of the sichuan-tibet railway in 2020.

According to the introduction, in the recent year, China railway group has initially established the sichuan-tibet railway. 5 + + 16 + 3 & 54 throughout; System and standard system; drafted and formulated five management systems, including the management measures for construction of sichuan-tibet railway; compiled and completed nine categories of sichuan-tibet railway similar projects and 54 technical summary reports; formulated and completed 16 construction standards and ldquo; Two tunneling and one bridge ” The atlas of design and construction technical scheme, key technical problems and countermeasures provides the system guarantee and technical support for promoting the planning and construction of sichuan-tibet railway with high starting point, high standard and high quality.

The establishment of sichuan-tibet railway co., ltd. undoubtedly means that the construction of sichuan-tibet railway has entered a new stage.

Sichuan-tibet railway connect chengdu in sichuan province and Tibet Lhasa, is the second after the qinghai-tibet railway to Tibet railway artery (and subsequent yunnan Tibet railroad), about 1580 km, the project total investment 270 billion yuan, considering spreads reserve funds after all estimation total investment is 304.5 billion yuan, after the open to traffic across the board from chengdu to Lhasa railway transit time will be from 36 hours to 12 hours or so.

The sichuan-tibet railway is the national railway grade I double-line electrification specification, with a design speed of 160-200 kilometers per hour and a proper reduction in local sections according to the actual situation. The minimum curve radius is generally 3500 meters, difficulty 2800 meters, and limited slope 30&permil. , the effective length of the arrival and departure line is 650 meters, and the traction mass of the universal speed truck is 2,100 tons.

Construction of the sichuan-tibet railway is divided into four sections, including the chengdu-ya 'an section, which started operation on December 28, 2018, and the lassa-nyingchi section, which is under construction and will open by the end of 2021.

Construction on the ya 'an-kangding section began in 2016, while the most difficult section, kangding-nyingchi, is expected to begin this year and take up to 10 years to complete.

Along the route of sichuan-tibet railway, there are five geomorphic units including sichuan basin, western sichuan alpine canyon area, western sichuan alpine plain area, hengduan mountain area in southeast Tibet, and southern Tibetan valley area. The terrain and geology are extremely complicated, the environment is very fragile and sensitive, and the infrastructure is very weak, so the project construction is extremely arduous.

All need the accumulative altitude of more than 16000 square meters, equivalent to two Everest, tunnel proportion is as high as 84% at the same time, the tunnel total length of 843 kilometers, more than the high-speed rail from Beijing to zhengzhou total mileage, more than 30 km long tunnel have six, but wu - TongMai Yi Gong tunnel is achieved astonishing 54 kilometers, and at present, China's longest tunnel of 32 kilometers of railway has been built.