Recently, the shield machine for the Xixiang Station–Gushu Working Shaft section (hereinafter referred to as the "Xigu Section") of the Jichang–Qianhai section of the Guangzhou–Dongguan–Shenzhen Intercity Railway officially launched. To date, a total of 7 shield machines are tunneling simultaneously across the entire line.

The "Furui No. 1" shield machine successfully launched

The right line of the Xigu Section tunnel is 2130.25 m long, with a minimum curve radius of 550 m and a maximum burial depth of 67.25 m; it is constructed using a dual-mode TBM-EPB shield machine. The tunnel body mainly passes through moderately to slightly weathered granite and must underpass 7 risk sources.

Shield machine hoisted and lowered into the shaft

The shield launching schedule is tight and the task is heavy: the builders carried out site layout and shield hoisting and lowering operations simultaneously, reasonably arranging the sequencing of processes to improve work efficiency.

Coordination work is highly challenging: the project department actively collaborated with relevant functional departments such as the Rail Transit Office, the Ecology and Environment Bureau, and the Traffic Police Bureau, effectively advancing project progress.

The Jichang–Qianhai section of the Guangzhou–Dongguan–Shenzhen Intercity Railway starts at the already-opened Shenzhen Airport Station of the Guangzhou–Shenzhen Intercity Railway and ends at Qianhai Station, with a total length of approximately 15.2 km, laid underground. The entire line has 3 stations: Xixiang, Bao'an, and Qianhai. The project is designed for a speed of 160 km/h and uses 8-car CRH6-type EMU trainsets.

Schematic diagram of the Jichang–Qianhai section of the Guangzhou–Dongguan–Shenzhen Intercity Railway

For Section 2 of the Shenzhen–Huizhou Intercity Railway, the first TBM for the Banli Shaft–Wuhe Station section and the second shield machine for the Pinghu Shaft–Banli Shaft section successfully launched in a dual launch.

The TBM launched this time is the first large-diameter double-shield TBM in the Shenzhen Metro; combined with continuous belt muck removal, it enables simultaneous advancing and segment erection for rapid operation. To date, Section 2 of the Shenzhen–Huizhou Intercity Railway has launched 7 tunneling machines.