On February 23, the Yaowangtang Tunnel of Xi'an-Ankang High-speed Railway, which was constructed by China Railway Seventh Group, was completed to achieve a good start in the New Year.
Located in Zhashui County, Shangluo City, Shaanxi Province, the tunnel has a single-hole double-track design with a total length of 3,948.4 meters and a maximum buried depth of 440 meters. The geological conditions of the tunnel are complex, the terrain is undulating, the surrounding rock is broken and the stability is poor. At the same time, the tunnel passes through the water-rich area, and the maximum daily water inflow is about 12,000 cubic meters.