Wushaoling Tunnel China

Wushaoling tunnel, the ninth longest rail tunnel in the world, has an overall length of 21.05km. It is located at Gansu province in China and was constructed as part of the Lanxin (Lanzhou Xinjiang) high speed railway line.Tunnel construction began in November 2002. It was built using the New Austrian Tunnelling Method in a geologically challenging fault zone. Lingyuan Iron supplied 4,360t of steel for the tunnels construction.The tunnel includes two bores separated by 40m. It was bored to a maximum depth of 1,100m. It is designed for a maximum speed of 160km/h.