Zhongshan City is located on the west bank of the Pearl River Estuary, at the core area of the Guangdong-Hong Kong-Macao Greater Bay Area, with a dense river network and interlaced water systems. The Maowan Chong Flood Control and Drainage Improvement Project, as Zhongshan City'sNo. 1 Water Conservancy Project of 2024, is a key project launched to prevent waterlogging and mitigate disasters. The advanced support technology of mixed-reinforced hollow square piles adopted in this project played an important role in this process.

As a comprehensive service provider of concrete products and technology, Jianhua Building Materials has a professional technical team to provide related services.Technical exchange meetings were organized regarding the site survey, geological analysis, and scheme design of the Maowan Chong Flood Control and Drainage Improvement Project. Design calculations were carried out from multiple dimensions, and ultimately500 mixed-reinforced hollow square piles were selected, with the design pile length optimized to 14-27 meters. Meanwhile, based on the calculation results, pile length conditions, and construction site conditions, AB-type and B-type square piles were selected respectively.

To help advance the project efficiently and with high quality, Jianhua Building Materials provides services such as on-site project observation, production base visits and inspections, and product testing reports, fully ensuring product quality.

Mixed-reinforced hollow square pile support is an effective river channel support method. By driving closely spaced support piles to form a continuous support structure, it can achieve the effects of anti-sliding and emergency rescue, collapse prevention, and waterlogging drainage and disaster mitigation, thereby ensuring the safety of surrounding buildings.

Structural and Durability Advantages of the Support Method

This support method has a reasonable structure, high strength, and excellent durability. Using centrifugal molding technology, the pile body strength exceeds C80; the double-groove grouting design can prevent soil and water loss, and the closely spaced arrangement can improve overall stability, meeting the durability requirements of different engineering structures.

Features in Construction and Transportation

In terms of construction and transportation, it features space saving, simple construction, and convenient transportation. The construction methods are flexible and diverse and can be adjusted according to project characteristics. It can be driven vertically or constructed on water. When used with a guide frame, it can effectively control construction precision and flatness; the pile body has an end plate that can effectively protect the pile head and can directly weld steel bars to make a crown beam, resulting in high construction efficiency and good pile quality; at the same time, it supports pile splicing operations, and the pile length can be flexibly matched according to project requirements.

          Hydraulic Vibratory Construction                             Static Pressure Construction

      Hammer Driving+On-Water PlatformConstruction                  Long Spiral Pilot Hole Construction

Economic and Maintenance Advantages

In terms of economy and maintenance, this support method is economical and efficient, and later maintenance is also relatively convenient and simple. Compared with traditional revetment structures, it can reduce the time and cost of earthwork excavation and partial soft foundation treatment, save project costs, and is suitable for emergency rescue projects.

Flood Control Embankment Emergency Rescue Project at Ketang Section of the South Rongjiang River(12Pilot piles were driven in the month to determine the scheme, and the project was completed in early3(emergency repair completed before the rainy season)

Support from Product Standards and Design Basis

At present, this product is supported by national standards and Guangdong provincial local atlas, providing sufficient basis for engineering design.

Wide Application of Technology and Regional Assistance

The pile splicing method and row-pile anti-sliding technology of mixed-reinforced hollow square piles are widely used in emergency projects for flood control and disaster mitigation and in sea dike projects with deep silt, providing assistance for water safety governance in the Guangdong-Hong Kong-Macao Greater Bay Area.

Tiansheng River Pumping Station in Doumen District, Zhuhai City

Likeng to Shenxianzhen Drainage Channel Improvement Project in Baiyun District, Guangzhou

Centennial-Standard Reinforcement Project for the Pingxia Section Sea Dike of the Qianwu Chikan Large Enclosure

With the application of advanced technologies such as mixed-reinforced hollow square pile support, the Maowan Chong Comprehensive Improvement Project was completed efficiently and with high quality, providing strong support for the construction of Zhongshan City's flood control and drainage system while also enhancing the city's image and residents' quality of life. The successful implementation of the Maowan Chong Flood Control and Drainage Improvement Project not only ensured Zhongshan City's own flood control safety but also added strong protection for water safety governance across the entire Greater Bay Area.

The path of water governance is long and arduous. Jianhua Building Materials will continue to provide more customized support products and more considerate services, safeguarding the peace and stability of the water towns, ensuring the safety of every inch of embankment, and making flood control and drainage projects truly become the"reassurance wall" in the hearts of the people of the water towns.