Recently, the inlet adit of the Yujialiang Tunnel, the left-side evacuation cross adit of the Ganchailiang Tunnel, and No. 1 evacuation passage of the Tianpingliang Tunnel in the Shaanxi section of the Kangyu High-Speed Railway—managed and constructed by Shaanxi Company of the Xi'an-Chengdu Railway Passenger Dedicated Line and built by China Railway 14th Bureau Group—have successfully broken through and entered construction. At this point, all working faces of the controlling works in this contract section have been opened, launching a full-scale construction boom.

The Shaanxi section of the Kangyu High-Speed Railway is 80.3 kilometers long. The line starts from Ankang West Station, runs through Langao on the main line, crosses the Daba Mountains, passes through Chengkou County of Chongqing Municipality, Dazhou City and Guang'an City of Sichuan Province, and Hechuan District and Beibei District of Chongqing Municipality, before connecting to the newly built Beibei South Station in Chongqing.

The Yujialiang extra-long tunnel is located in Langao County, Ankang City, with a total length of about 14.5 kilometers, of which China Railway 14th Bureau Group is responsible for 8.6 kilometers. It is the second-longest tunnel on the entire Xi'an-Chongqing High-Speed Railway and the longest tunnel on the main line of the Kangyu High-Speed Railway. The surrounding rock in the three tunnels is poor in stability; the adverse geological conditions mainly include gas, harmful gases, and weak surrounding rock, with long fault fracture zones present in many sections. The steep mountains and severe landslides make tunnel entry difficult and pose high safety risks. The Yujialiang Tunnel is also a major difficult and controlling project on the entire line.

Since entering the site for construction, the project department has carried out scientific planning and coordinated layout, held multiple special promotion meetings to optimize construction organization, and gathered high-quality construction personnel, operating machinery, and production materials to push forward at full capacity. During tunnel entry, following the requirement of "constructing reinforcement piles before entering the tunnel," the project has continuously implemented standardized tunnel construction, actively optimized construction techniques and methods, and strictly controlled process coordination. It overcame numerous difficulties such as high protection difficulty, difficult access road construction, and severe landslides caused by poor geology at the tunnel portal, quickly completed the standardized layout of the tunnel portal, and passed acceptance on schedule.

As an important part of the Baotou-Haikou and Beijing-Kunming corridors of the national "Eight Vertical and Eight Horizontal" high-speed rail network, the Kangyu High-Speed Railway is the first 350 km/h high-speed rail corridor in Shaanxi connecting the Guanzhong and Chengdu-Chongqing urban agglomerations. After the project is completed, it will operate 77 pairs of passenger trains per day and transport 38.4 million passengers annually. By then, rail travel from Ankang to Chongqing will be shortened from nearly 7 hours to 1.5 hours, which is of great significance for consolidating and expanding the achievements of poverty alleviation, comprehensively advancing rural revitalization, and shaping a new pattern of large-scale development of the western region.