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Watch Excavation 'super shield' to bore first train tunnel under Yangtze River in Shanghai, China
A giant boring-machine shield, designed to excavate a 7.74km (4.81-mile) underwater tunnel for the new Chongming metro line in Shanghai
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.scmp.com/video/china/3192624/excavation-super-shield-bore-first-train-tunnel-under-yangtze-river-shanghai
Huge excavation shield to bore new metro tunnel in Shanghai
www.scmp.comA giant boring-machine shield, designed to excavate a 7.74km (4.81-mile) underwater tunnel for the new Chongming metro line in Shanghai, was put into position on September 12, 2022, on Changxing…