Korea Bujeon-Masan double-track subway system 2 section SHIELD tunnel

Summary

This is the construction of the shield tunnel in the second section of the Bujeon-Masan double-track railway, which was carried out by crossing the Nakdonggang River from Gangseo-gu, Busan to Sasang Station. It was constructed using the Shield Tunnel Method (EPB Type) to extend the Bujeon-Masan double track. The Bujeon-Masan site is 6,283m (complex strata) and 2,497m (clay and shilt layers), with a total length of 8,780m, including 8,780m of invert concrete, five transverse tunnels, and one water collection.