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TBM "Qihang," with excavation diameter of 15.06 meters start tunneling for south line of Yellow River tunnel
The Yellow River tunnel has a total length of 3,888 meters, with 3,252 meters to be excavated using TBM "Qihang.
https://english.news.cn/20250510/817abb5f48194b0d94030fa3eeebeb53/c.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://english.news.cn/20250510/817abb5f48194b0d94030fa3eeebeb53/c.html
Shield machine of south line of Yellow River tunnel starts boring in Jinan
english.news.cnShield machine of south line of Yellow River tunnel starts boring in Jinan-