On October 14, the Sifangshan Tunnel of the Xi-Chongqing High Speed Rail, constructed by the 11th Bureau of China Railway, was successfully completed, laying a solid foundation for the completion and opening of the entire Xi-Chongqing High Speed Rail line as scheduled. The Sifangshan Tunnel is located in Kaizhou District, Chongqing, with a total length of 9,485 meters. The Xi-Chongqing high-speed railway is an important part of the country's “eight vertical and eight horizontal” high-speed railway network, the Beijing-Kunming Corridor and the Baohai Corridor. The total length of the main line is about 739 kilometers, and the construction was carried out in two sections: from Xi'an to Ankang and from Ankang to Chongqing. Currently, the Xi'an-Ankang section of the Xi-Chongqing High Speed Rail was opened and operated on September 28. The construction of the Kangyu section has completed 67 tunnels. The entire project is about to enter the engineering stages of ballastless track construction, station building construction, and four-power project installation.

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