Abstract：
The eastern extension of the Shenzhen metro line 2 was constructed using a shield machine that passed through the existing operating metro line 4 within a distance of 6.542m; the shield launching at the end of the section traveling from the Futian Station to the Civic Center Station is only 1.841m away from the left line of the bottom of the lining structure. Additionally, it is 1.9m from the reinforced soil body at the launching end along the shield tunnel. This paper introduces the construction scheme of this shield tunnel beneath an existing metro tunnel.
2013, Vol. 50 