China builds world’s largest diameter underwater shield tunnel at record-breaking speed
SMRTR summary
China has completed the world's largest-diameter underwater shield tunnel in just 110 days. The 55.8-foot wide, 2-mile section under the Yellow River was built using a massive boring machine called "Shanhe," which advanced up to 59 feet per day and set new construction speed records.
SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.
Read the original article