On the afternoon of November 19, as the last batch of concrete was slowly poured into the formwork, the concrete pouring was completed more than four hours later, and the final 100-meter water retaining wall of the Jiangbei section was successfully closed, marking phased achievements in the Haitai Yangtze River Tunnel project.

The project officially started on September 10, 2022, with an estimated construction period of 72 months. The water retaining wall is installed at the top and on both sides of the deep foundation pit of the two-way heavy-duty vehicle road in the Haitai Yangtze River Tunnel project section, with a total length of about 1,946 meters in both directions. After the successful closure of the concrete, the main enclosure works have been fully completed, and the conditions for deep foundation pit excavation are now in place. Ancillary works such as guardrail upgrades are expected to be completed in mid-December.

At the project site, Gu Jiahao, an on-site technician from the project department of China Railway 14th Bureau Group, said: "This is the result of our team's efforts and our commitment to project quality. We uphold the philosophy of striving for excellence and complete every task in a safe, efficient, and scientific manner. Seeing the successful closure of the water retaining wall, we feel immensely gratified and proud."

The construction command center spoke highly of the construction quality and progress of the water retaining wall, believing that the project not only enhances the road's flood control capacity but will also improve the overall traffic safety of heavy-duty vehicles entering the construction site of the Haitai Yangtze River Tunnel project.

According to Xiang Pan, an on-site supervision engineer from China Railway Siyuan Survey and Design Group, the construction of the water retaining wall is an important part of the Jiangbei section. The water retaining wall is installed at the top and on both sides of the tunnel and is mainly used to prevent surface water from entering the deep foundation pit of the tunnel. This project also includes upgrading and reinforcing the guardrails and improving the drainage system. The full completion of these works will greatly enhance the driving safety and flood control capacity of the two-way heavy-duty vehicle road.