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Major breakthroughs large-diameter hard rock TBM mountain tunnels in China

    Chu Yang
    By Chu Yang Replies (1)

    Xinhua News Agency write China Railway Construction Co. Ltd. make major breakthroughs Fuzhou Binhai Express Line. It connect Fuzhou Railway Station to Changle International Airport, with a total length of 62.4 kilometers and a design speed of 140 kilometers per hour.

    Two 8.6m large-diameter TBM hard rock machines bore 220 MPa super hard rock formation, 6 or 7 times stronger than ordinary concrete. 4.53 km Elephant Mountain Tunnel is a control project for the entire line.

    http://finance.people.com.cn/BIG5/n1/2021/0609/c1004-32126973.html

     

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