Recently, the under-construction east extension of Guangzhou Metro Line 5 (Wenchong–Huangpu Passenger Port) reached a major milestone: through the joint efforts of all metro builders, the comprehensive building at Shuanggang Depot has successfully topped out.

● Optimizing construction organization to ensure safety ●

Shuanggang Depot is located on the northeast side of the intersection of Fuda Road and Xinhua Road in Huangpu District. The depot's cover slab has a total area of more than 68,000 square meters and, from east to west, comprises the access line and U-shaped trough, the throat area, and the warehouse area. It features 13 parking and inspection tracks, 2 weekly and monthly inspection tracks, 1 temporary repair track, 1 wheel-turning track, and 1 test track. The depot's supporting comprehensive building is located at the west end of Shuanggang Depot and is 36.5 meters tall.

The main structure of the depot project (including over-track development) is large in scale, and the individual works and construction process involve extensive cross-operation among processes and disciplines. To improve project management efficiency in multi-discipline cross-construction and ensure construction safety, Guangzhou Metro and the contractor Beijing Construction Engineering Group carefully planned and adopted a segmented and block-based construction organization model. At peak times, nearly 900 construction workers worked simultaneously across 9 work faces. In addition, the contractor organized safety training for construction workers through simulated safety experiences and video warning education, ensuring construction safety while guaranteeing construction quality and progress.

● Applying new technologies to improve construction efficiency ●

Because the strata in the construction area are mainly highly weathered rock, using traditional pipe pile construction technology would not only generate loud construction noise but also result in relatively low efficiency. To this end, the metro builders actively carried out technical research and applied a number of new technologies at the construction site.

During pile foundation construction, the metro builders introduced the "Guanwuyou" technology to control excess concrete pouring. This effectively reduced construction costs while comprehensively improving construction efficiency, and effectively avoided the environmental impact of waste disposal, achieving the goal of energy conservation and environmental protection. During construction of the comprehensive building, the metro builders also used a new type of aluminum perforated protective netting, which both improved the safety factor of construction and ensured the aesthetics of the construction site, achieving good social benefits.

As of now, the civil engineering work for this section has been completed 32%. Civil engineering construction is underway at 6 stations along the line; of the 6 intervals, 4 are under civil engineering construction and the remaining 2 are in preliminary preparation. Civil engineering construction is underway at Shuanggang Depot.