Sichuan-tibet railway construction propaganda slogan

If you want to say which place in China has a bad geographical and climatic environment, the Qinghai-Tibet Plateau ranks second, and no place dares to rank first. As a requirement of national development, the Qinghai-Tibet Plateau must be closely connected with the mainland, and the development of expressways and railways must be accelerated.

In 2006, the first railway in China, the Qinghai-Tibet Railway, was put into operation, ending the history of no railway in the Qinghai-Tibet Plateau. You know, although the Qinghai-Tibet Railway is difficult to build, it is not of the same level as sichuan-tibet railway, which is about to start construction.

The rapid development of infrastructure in China makes it possible to conquer the harsh geographical environment.

Qinghai-Tibet Plateau, majestic snow-capped mountains, complex terrain, endless frozen soil and harsh plateau anoxic environment are all difficult problems in engineering construction. It can be said that building a railway on the Qinghai-Tibet Plateau will definitely be said to be crazy abroad. The construction cost is high, and the input is disproportionate to the harvest. Foreign countries will definitely not build it.

Since the founding of New China, with the unremitting efforts and hard work of China people, China's infrastructure capacity has developed qualitatively, and the development of machinery, advanced girder erection machinery and track-laying machinery have made the railway construction in China develop at a high speed. China Railway people are confident to fight against the harsh environment, and sichuan-tibet railway is no longer an impossible project.

Sichuan-tibet railway has a long history.

The history of sichuan-tibet railway dates back to the late Qing Dynasty, and British imperialism played an ignominious role, so I won't go into details here.

In the early years of the Republic of China, Sun Yat-sen attached great importance to sichuan-tibet railway and even suggested that sichuan-tibet railway was related to national security. 1928, Liu also proposed to build sichuan-tibet railway.

After the founding of New China, we began to explore sichuan-tibet railway substantively, but limited by the infrastructure capacity and the level of economic development at that time, there has been no substantive progress. In the 1990s, sichuan-tibet railway entered the initial route selection stage, and the Qinghai-Tibet Railway, which is less difficult to build, took the lead. In 2006, the Qinghai-Tibet Railway was opened to traffic.

Since then, the sichuan-tibet railway project has progressed slowly. Until March of 20 1 1, sichuan-tibet railway officially entered the "Twelfth Five-Year Plan" and the sichuan-tibet railway project was officially accelerated.

In June, 2020, sichuan-tibet railway Company was established, with China Railway Corporation holding 65,438+000%, mainly promoting the construction of sichuan-tibet railway.

The super project with a total investment of more than 300 billion was officially released.

Sichuan-tibet railway connects Chengdu and Lhasa, in which Chengdu-Ya 'an section was put into operation in February 20 18, and Lhasa-Linzhi section was 2021kloc-0/km, with a design speed of 120.

Ya 'an-Linzhi section crosses 14 rivers, and 2 1 blocks snow-capped mountains over 4000m. Therefore, bridges and tunnels have become the protagonists of sichuan-tibet railway, with the bridge-tunnel ratio exceeding 8 1% and the altitude drop reaching more than 3,000 meters, which is unprecedented in other railway construction. The map below shows the topographic map of sichuan-tibet railway.

Because sichuan-tibet railway uses the "step" route to climb the plateau directly, its construction difficulty is far greater than that of the Qinghai-Tibet Railway which uses the "gentle slope" route to climb the mountain indirectly, which is no small challenge to China's railway construction.

The investment in the whole line of sichuan-tibet railway exceeds 380 billion yuan, of which the investment in the new line of Yalin section101km reaches 319.8 billion yuan, and the cost per kilometer exceeds 300 million yuan, which is much higher than the high-speed rail line currently under construction in China.

On June 8, 2020, sichuan-tibet railway Yalin Section officially started construction, with a construction period of 10. It is expected to be completed and opened to traffic in 2030. Westerners once boasted that China could not build sichuan-tibet railway in 100. I believe that with the infrastructure capacity of China and the hard work of railway builders, the new sichuan-tibet railway in 2030 will definitely shock the whole world.