Yawan High -speed Rail 2 tunnel smoothly penetrates smoothly

On June 21, the No. 2 Tunnel 2 of the Yawan High -speed Railway Difficulties in China Electric Power Construction successfully opened up.The total length of the tunnel No. 2 is 1052 meters, which is a single hole and two -line tunnel with a maximum buried depth of 53.6 meters.The layers distributed in the tunnel site are the fourth -series renewal of the uniform volcanic accumulation layer of clay and coarse round gravel. The layer has the characteristics of "four highs and one high", namely"Rate" is the most difficult tunnel in the entire line.At present, all 13 tunnels in the project have been opened, and the tunnel and culvert projects have been completed. The number of civil construction projects in road bases, bridges, and stations is more than 90%.During the construction process, China ’s construction units have successively encountered difficulties in collapse, tunnel settlement, deformation, and mud, and the global spread of new crown pneumonia has caused people to flow and obstruct personnel transportation.Chinese construction units overcome difficulties, increase resource allocation, and reasonably arrange construction plans. China -Indonesian employees fight day and night, making the No. 2 tunnel run smoothly, laying a solid foundation for the subsequent beams and no -rail track construction.

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