Abstract:

The second line of Shenyang Metro starts from the North of Beiling and ends at the Century Square Station, which is located in front of the 21 Century Mansion in the new Hunnan district. The total length of the second line of Shenyang Metro is 19.245km. The running tunnel between Wulihe Station and Olympic Sports Center Station crosses the 500mwide Hunhe River. In the paper, the author, based on the geological and hydrological conditions of the tunnel, presents the major design characteristics and performance of the shield machine adopted for the tunnel, including the type selection of the shield machine, the style of the cutter head, the arrangement of the cutting tools, the opening style of the cutter head, the stone crusher and the working modes of the shield machine. Furthermore, the author also presents the stabilization measures for the cutting face, the arrangement concept of the slurry treatment system, the measures for the cutting tool replacement, the construction plan of the cross tunnels, the interface of shield boring and the design of the end ground consolidation.