The construction of a rainwater drainage tunnel in Gangnam Station, Gwanghwamun, and Dorimcheon Stream in Sillim-dong, Seoul, will begin on the 10th of next month.The 'Deep Rainwater Drain Tunnel ...
A gravity-driven tunnel will ensure large volume of water flow without pumps, reducing operational and maintenance costs. Unlike the 10.3km tunnel launched in 2019 to drain rainwater from Expo ...