Recently, the exit of Taihe Tunnel and the large-chainage end of Xiajing Inclined Shaft on the first long tunnel of the northeastern freight outer bypass of the Guangzhou railway hub were successfully holed through, marking the first long tunnel on the entire line to achieve a node breakthrough.

Taihe Tunnel has a total length of 12.936 kilometers. The section between the tunnel exit and Xiajing Inclined Shaft is 2.778 kilometers long and was completed 45 days ahead of the construction organization schedule. It is a controlling project in the Baiyun District section of the Guangzhou railway outer bypass line.
The tunnel is located in Taihe Town in the northeastern part of Guangzhou in the Pearl River Delta region and is a single-tube double-track tunnel. The average burial depth of the tunnel is 39 meters. It mainly passes through Grade IV and V weak surrounding rock, with complex geological structures, abundant groundwater, and poor self-stability, making it prone to risks such as water and mud inrush, landslides, and collapse. At the same time, there are technical construction challenges such as passing beneath the Jinkeng River channel and the Dengsui Highway, with burial depths of 1 to 5 meters.

During construction, the project strictly followed the requirements for standardized, normalized, and systematic railway construction. Employees upheld the spirit of model workers and craftsmen, ensured quality and safety, solved technical problems one after another, and overcame construction difficulties such as land acquisition and demolition, high temperatures and severe heat, and typhoons and rainstorms, achieving the smooth breakthrough of the first long tunnel node on the entire line.
The northeastern freight outer bypass line of the Guangzhou railway hub has a total length of 68.893 kilometers. It passes through Huadu District and Huangpu District and ends in Zengcheng District. The construction of the project meets the needs of urban planning and development. It not only helps improve the railway network in the Guangzhou area and develop the railways in the Guangzhou area into a ring-shaped hub pattern with freight on the outside and passengers on the inside, enhancing railway transport capacity and the flexibility of transport organization and greatly improving hub transport efficiency and quality, but also helps the Pearl River Delta take the lead in supporting the national "Belt and Road" initiative and boosts connectivity within the Guangdong-Hong Kong-Macao Greater Bay Area.