On August 29, the construction of the 125th diaphragm wall in the western section of the Shenzhen-Dongguan Tunnel of the Shenzhen-Jiangmen Railway was completed, also marking that more than half of the diaphragm wall construction in the western section of the project's Shenzhen-Dongguan Tunnel has been finished.

According to reports, the Shenzhen-Jiangmen Railway has a bridge-tunnel ratio of 98% across the entire line, among which the Shenzhen-Dongguan Tunnel and the Hongqili Road-Rail Bridge are key and difficult projects along the entire line. After the project is completed, Shenzhen Qianhai and Guangzhou Nansha will achieve half-hour high-speed rail connectivity, and Jiangmen, Zhongshan and other places will also have direct high-speed rail access to Shenzhen Bao'an Airport, greatly facilitating travel for residents along the line and being of great significance for promoting economic and social development along the line and supporting the construction of the Guangdong-Hong Kong-Macao Greater Bay Area.

The western section of the Shenzhen-Dongguan Tunnel adopts open-cut construction. The foundation pit is 753 meters long, 39.8 to 51.27 meters wide, and 24.9 to 26.6 meters deep. A total of 249 diaphragm walls are designed, and 125 have been completed.

At the Shenzhen-Jiangmen project work site, 4 rotary drilling rigs, 2 double-wheel trench cutters, 2 large cranes, and 1 trenching machine are all in operation, with the roar of machinery as all posts cooperate closely to rapidly advance the construction of the project.

A person in charge of the Shenzhen-Jiangmen project stated that the Pearl River Delta region has a lot of rainy weather, poor geological conditions, and a complex construction environment, which greatly increases the difficulty of trenching construction for diaphragm walls. Facing these difficulties, the project team strictly controlled the acceptance inspection of equipment entering the site, strictly checked that special operation personnel hold certificates, quantified construction tasks, refined responsibility division, and continuously carried out technical research to improve work efficiency.