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Beijing Underground Diameter Line
Source£ºCREC Date£º2018Äê11ÔÂ27ÈÕ

With a total length of 6,225 meters, Beijing Underground Diameter Line is located at Beijingxi Railway Station. The line is roughly east-west, including 181.2-meter-wide open excavation section, 871.3-meter undercutting tunnel and 5,175-meter shield tunnel.

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Beijing Underground Diameter Line

The project is the first fully electrified tunnel of railway built under prosperous urban area. Under complex geological condition of sandy gravel, CREC adopted a large slurry shield whose diameter reaches 11.97 meters to excavating this tunnel, which is firstly used in China. As the tunnel of longest construction distance using large-span shallow-buried tunneling method, it is also the deepest underground continuous wall in Beijing.

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