On July 1, the Dongpo Road North Extension, a core supporting road of the Foshan Station of the Guangzhou-Zhanjiang High-Speed Railway, was officially opened to traffic. This key corridor, which clears the "last mile" of bringing the high-speed rail into the city, was completed in just 14 months. Behind the efficient completion lies the meticulous, refined control exercised by the contractor, China Railway Major Bridge Engineering Group, over the quality of pile foundation hole formation, building a solid engineering foundation with millimeter-level construction precision and creating a premium regional municipal road project.

It is reported that the Dongpo Road North Extension has a total length of 1.832 kilometers, adopts a high-standard layout of eight lanes in both directions on the main line, and is designed for a speed of 60 kilometers per hour. It is a core component of the Foshan Station collection and distribution road network. The project is located in the core urban area of Chancheng, surrounded by dense residential communities and factory buildings, with complicated underground pipelines. The stratum structure is complex, and the project faces the challenge of underwater construction during the flood season. As the foundational process of the road project, pile foundation hole formation poses enormous construction difficulties and quality control pressure.

To overcome the construction difficulties, the project established a dedicated technical task force, customized a special construction plan based on on-site survey data, and implemented standardized control over the entire process of pile foundation hole formation. The construction team dynamically monitored drilling parameters, precisely regulated drilling speed and mud proportioning, and strictly controlled core indicators such as hole diameter, verticality, and sediment at the bottom of the hole, effectively avoiding quality hazards such as hole collapse and diameter shrinkage. At the same time, the construction sequence was optimized to avoid periods of heavy rain during the flood season, with strict control of underwater construction risks, comprehensively ensuring the precision of pile foundation construction.

The refined quality control produced remarkable results. The project completed the lower structure of the main pier and the No. 0 block in only four months, and the elevation error of the closure section across the entire line was far below the national specification limit of 20 millimeters, achieving closure with millimeter-level precision. During construction, the project simultaneously implemented measures such as soundproof enclosures, spray dust suppression, and staggered working hours to minimize the impact on the lives of nearby residents and the ecological environment.

The opening to traffic marks the further improvement of the collection and distribution system of the Foshan Station of the Guangzhou-Zhanjiang High-Speed Railway. The precise and rigorous quality control of pile foundation construction has laid a solid foundation for the safe and stable operation of the road. The commissioning of this road section effectively unclogs the bottleneck in passenger and freight collection and distribution at the high-speed rail hub, and will inject new momentum into the development of high-end manufacturing, modern logistics, commercial and trade services, and other industries in the Chancheng area, supporting the high-quality, coordinated development of regional transportation and industry.

Source: China News Service