Integrated excavation construction method for transition from shaft construction passage to large cross-section tunnel
A technology of construction access and construction method, applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of long excavation period, construction safety, biased pressure, etc., and achieve the effect of simplifying the process, shortening the construction period, and easy to construct.
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[0071] The invention is used in the Zhongguanshui Road subway station of the first phase project of Guiyang Urban Rail Transit Line 2, and has achieved good results from the on-site construction conditions.
[0072] Guiyang Urban Rail Transit Line 2 is an important subway line under construction in Guiyang City, Guizhou Province. The line starts from Qiji Intersection Station, passes through Longdongbao International Airport, Nanming District Administrative Center and other key construction areas in Guiyang City, and ends at the East Passenger Transport Station. The first phase of Line 2 (Qiji Intersection Station-Youzhajie Station) has a full length 27.4km, both underground lines. There are 24 stations in total. The average distance between stations is 1162m, the maximum distance between stations is 2070m, and the minimum distance between stations is 645m. There are 5 transfer stations in total.
[0073] Guanshui Road Station is the 23rd station in th...
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