Awesome! Qinwang Tunnel, the largest public-railway joint construction project in China, was successfully completed. What are the technical difficulties of this project?

Tunnel is the difficulty and key node of project construction and plays a key role in the opening of roads. ?

The smooth completion of the Qianyiyan Tunnel of Jinyong Railway, which was built by China Railway 14th Bureau, marked a breakthrough in the construction of Jinyong Railway. The tunnel site is a bare low mountainous area with steep mountain, serious water erosion and cutting, complex geology and great construction difficulty. It was learned from Nanchang Bureau Group of China Railway that as of September 16, the Jinyudi Tunnel in Fujian direction of Longlong Railway had been successfully completed. After verification, the total length of the tunnel can reach 425.438+05438+0 meters, which is a single-hole double-line tunnel. The results show that the geological conditions in Fujian section are very complicated and the construction environment is the worst.

Because the construction here is very difficult, because when a tunnel passes through the National Forest Park, the greening construction of this section is very demanding, because the most important thing of this line is to protect the ecological environment, which brings some difficulties to the project. It can be seen that some important progress has been made in the construction of this railway, which has also created conditions for the next stage of work and laid a solid foundation for the whole construction period of the whole line.

According to the introduction of the railway department, it can be confirmed that the geological situation here is very complicated. In order to face all kinds of problems, the construction team and the railway construction headquarters here will see the geological report in advance, so that the monitoring process management in different locations will have different plans, and the step method or subsection method will be used to construct together.

Jin-Yong Railway is a supporting project for the construction of the open passage from Yong to Zhou Zhou, and it is also an important project to implement the high-quality comprehensive development strategy of the Yangtze River Delta and improve the layout of the regional railway network. Upon completion, it will realize the interconnection between Yiwu, the world's small commodity capital, and Zhoushan Port, Ningbo, the world's largest port, which will effectively promote the economic and social development along the route. The tunnel site is a bare low mountain area with steep mountain slope and serious water erosion cutting. It crosses 7 fault zones, 5 joint dense zones and 2 lithologic contact zones. The geology is complex, the excavation technology and safety risks are high, and the construction is difficult. This is a control project of Jin-Yong Railway.