Construction of Guangzhou-Dongguan-Shenzhen Intercity Railway enter a new phase. On August 31, "Shenwan No. 2" Tunnel Boring Machine pass acceptance two initial check. It bore Shenzhen-Dongguan-Shenzhen Intercity Railway Shenzhen Airport to Qianhai section.
"Shenwan No. 2" is second of two slurry mud-water TBM. Diameter 9.14 meter long 123 meter. Single head tunneling of 4.5 kilometer.
http://sz.people.com.cn/BIG5/n2/2021/0902/c202846-34895410.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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