CNA Insider - Tomorrow City, Part 1/3 - Megaproject: Singapore's Deep Tunnel Sewerage System, 03092021

To overcome Singapore's land and space challenge the country is investing in megaprojects. One such project is the Deep Tunnel Sewerage System. Using new technology this infrastructure will also take Singapore’s sewage management into the next century. But tunnelling under built up areas is a challenge with massive tunnel boring machines underground as well as contending with geological challenges and the ever present risk of sinkholes