What are the difficulties encountered in the process of railway construction in Tibet and how to solve them?

The Qinghai-Tibet Railway will cross 550 kilometers of continuous frozen soil and 82 kilometers of discontinuous frozen soil.

Solution: China scientists have taken measures such as replacing roads with bridges, flaky ventilation subgrade, ventilation tube subgrade (active cooling), gravel and flaky slope protection, hot rods, insulation board and comprehensive waterproof and drainage system. , to solve the problems caused by thousands of years of frozen soil.

2. Altitude sickness

The section of Qinghai-Tibet Railway above 4000m above sea level accounts for about 85% of the whole line, the annual average temperature is below 0℃, and the oxygen content in most areas is only 50%-60% of that in the mainland.

Solution: The Ministry of Railways and the Ministry of Health jointly issued the following documents for the first time in the history of China's engineering construction, specifically making detailed provisions on medical and health security, and invested nearly 200 million yuan to establish medical and health security points across the line. Three-level medical security institutions have been established and improved.

3. Ecological and environmental protection

The Qinghai-Tibet Railway passes through China National Nature Reserve, such as Hoh Xil, Sanjiangyuan and Qiangtang. Because it is located on the roof of the world, its ecological environment is sensitive and fragile.

Solution: In order to ensure the living environment of wild animals such as Tibetan antelope, 33 special passages for wild animals were established across the railway. In order to protect the wetland, the world's first artificial wetland was built in the alpine region; In order to protect the landscape along the line and realize "zero pollution" on the ground and trains; In order to improve the ecological environment along the line and create a "green corridor" thousands of miles away.

Extended data

Tibet railway network

Qinghai-Tibet Railway-(Lhasa-Shannan)-related port railway (connecting Bhutan, India and Bangladesh in the long term) has one longitudinal section, the other longitudinal section is Tibet section of Dage Railway, and there is a branch line (Bomi-Chayu Railway "Changpocha Railway"); "Liang Heng" refers to the Shiquan River-Naqu Railway (Shina Railway)-Naqu-Changdu Railway (Nachang Railway)-Marcand-Mianyang in Ali, and the second cross is the Xinzang Railway. La Ri Railway-Lalin Railway-? Sichuan-tibet railway.

Baidu encyclopedia-Qinghai-Tibet railway