Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

The allusions of "foolish old man moving mountains" were written into textbooks of several generations. At the end of 2015, the reality version of "the foolish old man moved the mountain" appeared in Hami, Xinjiang. In the cold winter, some people are still stationed in the snowy East Tianshan Mountains all year round, crossing the unpopular Daban, carrying all kinds of equipment, digging holes, bridging and repairing roads when there is no road to go. All this is just the beginning of the super-long tunnel work in Hami Tianshan, Xinjiang, but it has many pioneering domestic "first" will bring more inspiration and vitality to Hami, and even Xinjiang's future public infrastructure construction. What is the meaning of Tianshan tunnel in Xinjiang? The Hami East Tianshan Tunnel project, which is scheduled to start next year, is located at K0+000 of Harrow Highway, crosses the G30 National Highway (Lianhuo Expressway) northward, crosses the irrigation trunk canal of the 13th Division of the Corps, then northward through Hulugou Kou, Xishan Township, Hami City, crosses the East Tianshan to Xishan Forest Farm through the extra-long tunnel, west of the Yiwuma Farm, and the existing S3. 03 docking, the terminal and the planned G7 Beijing new high-speed connection, the project line 71.66 km, of which the extra-long tunnel about 13.24 km.

Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

Bai Jianguo, Party Secretary of Hami communications and Transportation Bureau, introduced:

"Tianshan Tunnel will be the longest and highest elevation tunnel in Xinjiang Highway Tunnel. It is the first transportation'PPP'project in Xinjiang (i.e. public-private cooperation mode, a project financing mode in public infrastructure), and it is also the most difficult tunnel for comprehensive construction in Xinjiang and even the whole country."

Realizing Hami's one hour economic circle

Bai Jianguo said that the eastern Tianshan Mountains divided the Hami region into the South and the north, and now mainly rely on 303 provincial highways, the old Haba highway to achieve interchange. After the Tianshan Tunnel is opened to traffic, the efficiency of the two-way four-lane traffic will be greatly improved. It only takes one hour to travel between Hami and Balikun County. The East Tianshan Tunnel is of great significance to enhance the driving safety factor and the highway transportation support ability, to speed up the development of the economic belt on the northern slope of the Tianshan Mountains, and to speed up the realization of one hour economic circle in two counties and one city in Hami region.

Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

Why are Tianshan burrows hard?

irst of all, the weather. Tunnel excavation requires two operations at the north of Shannan mountain. The snowfall in the mountains in October has brought great difficulties to workers who need to be stationed in the mountains all day. Exceptionally rugged mountain roads not only make large machinery unable to enter, many small equipment also need to be carried by people shoulder. When working on a mountain, there is often no way to go and "fix another path" to repair the sidewalk.

Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

The second is the complicated geological situation. The highest elevation of the eastern Tianshan Mountains has reached more than 3400 meters, and it passes through four fault zones. There are many dangerous factors such as high hard ground, abundant groundwater, complex structure and possible radioactivity in the mountain granite, which will bring great difficulties to the future construction. If the work goes well, the G575 Hami section will be opened to traffic in 2020.

Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

The first transportation PPP project in Xinjiang

PP mode is a kind of project financing mode in which the government and social capital cooperate to construct public infrastructure. Both the government and enterprises participate in the whole process. The cooperation time between the two sides is longer and the information is more symmetrical. Compared with financing function, PPP mode is more about management mode. It can be said that the implementation of PPP mode is more about the reform of management system, such as forced construction, management and maintenance. After the project is handed over, the Department of Transportation will jointly evaluate the project output, cost-effectiveness, regulatory effectiveness, sustainability, and the application of the government and social capital cooperation model, and publicly evaluate the results in accordance with relevant provisions.

Tianshan tunnel, one of the most difficult tunnels in China, is located in Hami, Xinjiang.

Relevant experts said that the "13th Five-Year Plan" period of Hami traffic will usher in great development, estimated that there will be about 40 billion yuan of investment. Compared with the previous situation in which infrastructure and public facilities are invested by the government and financial resources are limited, the introduction of the new investment model of "PPP" will help to achieve win-win situation through the cooperation of government capital and social capital. The extensive and abundant financial resources will benefit the people, and will also bring more inspiration and vitality to the future public infrastructure construction in Hami and even Xinjiang.