Recently, it was learned from relevant departments of Huadu District that the left-line tunnel of the east section of the Guangzhou Fangbai Intercity Railway (Fangcun-Baiyun Airport) has been successfully completed. This section is also part of the Baiyun Airport T3 Transportation Hub Rail Transit Reserved Project (hereinafter referred to as the "T3 Rail Transit Hub"). The completion of the left line marks both the completion of both lines and the completion of the main structure construction within the scope of the East Third Runway of the airport Phase III expansion project.

It is understood that the Fangbai Intercity line starts from Fangcun Station of Guangzhou Rail Transit Line 22 (under construction) and ends at Airport North Station of Baiyun Airport, passing through Liwan District, Yuexiu District, Baiyun District, and Huadu District. The total length of the line is about 41.1 kilometers, all of which are underground lines, with 10 stations, namely Caihongqiao Station, Guangzhou Railway Station, Baiyun Station, Xiamao Station, Baiyun City Center Station, Fangshi Station, Renhe Station, Airport East Station, Airport South Station, and Airport North Station, with an average station spacing of 4.1 kilometers.

The shield tunnel on the east side of the Fangbai Intercity of the T3 Rail Transit Hub is a single-tube double-track shield tunnel with a line length of about 585 meters. It is constructed using the "Fangbai No. 1" slurry shield machine with a cutterhead diameter of 8.8 meters. The shield construction site of this section is mainly within the scope of the newly built East Third Runway, drainage channel, and storage pond of the airport Phase III, and is adjacent to the New Baiyun-Guangzhou Intercity. The shield needs to pass under the open-cut structure of the Guangzhou-Heyuan High-Speed Railway and the Tugangkeng River. It is the most geologically complex of the six section tunnels of the T3 Rail Transit Hub project. In the shield construction operation of less than 600 meters, three compressed-air chamber inspections were carried out and more than 40 cutters were replaced.

To ensure high-quality progress of the project construction, during shield tunneling, the project continuously optimized the control tunneling parameters based on the completion of the right line, adopted high-quality high-performance slurry, strengthened slurry circulation management, and added dispersing materials to the slurry chamber to prevent mud caking and clogging on the cutterhead, reduce abnormal wear of cutters, and ensure tunneling efficiency.

The T3 Rail Transit Hub is an important part of the Phase III construction of Guangzhou Baiyun Airport. As of now, 71% of the project's civil engineering works have been completed. Once completed, it will connect Baiyun Airport with Guangzhou's central urban area, the Pearl River Delta city cluster, and the Guangdong-Hong Kong-Macao Greater Bay Area, and is of great significance for further enhancing Guangzhou's competitiveness as an international aviation hub and promoting the high-quality development of the Greater Bay Area.