Abstract:

Taking the construction of a shielddriven tunnel on line 3 of Guangzhou Mass Rapid Transit system as example, the author presents the quality control of the segment erection of shielddriven Metro tunnels in respect of acceptance tests of segments being mobilized to the job site, protections and inspections of segments before being hoisted into shafts, protections of segments during transportation, principles of segment selection, technical requirements for segment erection, problems occurring during erection and protections of segments leaving the tail skins.