Name: Shield tunneling completed for Jiaozhou Bay's second undersea tunnel
Uploaded: 2026-07-14T22:00:48+08:00
Duration: PT20.167S
Description: The main shield tunneling work of Qingdao's second Jiaozhou Bay undersea tunnel has been completed. Crews used a giant shield machine to excavate deep beneath the sea, overcoming complex underwater geological challenges. The 17.48-kilometer tunnel, including

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The main shield tunneling work of Qingdao's second Jiaozhou Bay undersea tunnel has been completed. Crews used a giant shield machine to excavate deep beneath the sea, overcoming complex underwater geological challenges. The 17.48-kilometer tunnel, including a 9.95-kilometer undersea section, is designed for speeds of up to 80 km/h and will improve regional travel.

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