The first highway of the "Numbers of the S still" in the country is opened to traffic

Correspondent Yang Tao Xue Yongzheng

Recently, Zhao (Tong) Le (Mountain) highway Qingshui section was officially opened to traffic in the Qingshui section of Zhao (Tong) Le (Shan), which was established by the 17th Bureau of China Railway. Yanjin County, the "narrowest" city in the country, ended the history of no highway.

Bird's view of Yanjin County

Yanjin is located at the junction of Yunchuan in northeast Yunnan. The county is narrow north and south, and the east to west is narrow. The county seat is located in the deep mountain gorge. The house is built on the mountains. Now, the construction team from China Railway Construction has once again carried forward the spirit of the railway soldiers of "every mountain chiseling, encountering the water frame." High -speed channels, Yanjin County's connection to the outside world will be reduced to 10 minutes.

From the east of Qingshui Section of Zhaole Expressway, Qinglongtui Town, Yanjin County, Xizhi Waterfield New District, with a total length of 11.2 kilometers. It uses a two -way four -lane highway standard construction. The design speed is 80 kilometers per hour. Tunnels and interchange interchange. In the line area, the mountains are deep, which is a high -incidence area for geological disasters and secondary disasters. The entire bridge and tunnel ratio reached 87%, and there are many highways across many places. The construction is difficult.

Lishanping Tunnel

In order to successfully open up the key control project of the entire line, the Lishanping Tunnel, the project team of the 17th Bureau of China Railway overcomes high factor factors such as high stress, crossing more fracture bands, and poor geological structure stability. Successfully crossed the rich water -soluble cave, soft rock deformation and gas location. At the same time, in order to deal with the huge challenge of the average daily water flow of about 30,000 cubic meters, the maximum water flow during the rainy season reached 126,000 cubic meters, the group's builders fully promoted the spirit of the railway soldiers, strengthened the allocation of resources, and tried to ensure the normal operation of the anti -slope drainage of the tunnel. In the end, the special highway tunnel mainly based on the IV and ⅴ -level surrounding rocks was opened.

Qinglong Tsui Interchange

In the construction of a large 1866 -meter tank door, the project carefully implemented the construction plan, and strictly followed the beam operating regulations. A total of 620 30 meters of prestressed concrete T beams were completed. In addition, in order to overcome the construction risks brought by the main line of the Chongqing -Kunming Expressway (G85), in order to overcome the existing risks of the Chongqing Expressway (G85), the project department has established a 24 -hour duty system. Bao Tong personnel conducted special training, and there were more than 40 people at the peak of construction.

Youfanggou Bridge

The completion of Qingshui Expressway not only realizes the traffic conversion between Yanjin County Mizuka New District, Huangge Tu New District and Yanjin County, but also becomes a connection line between the east -east -east -east -north and south arteries of the G85 Chongqing highway and the Yizhao high -speed speed. One section can make Yanjin County's rich specialty "go out" and promote the rejuvenation of local villages. At the same time, it will also form the most convenient channel for Yunnan Province to enter Sichuan to Sichuan to the north, adding new vitality to regional economic development.

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