Key technology for the construction of distributed pressure slurry extra-long pile foundation in Yellow River Wetland Reserve

In view of a series of pile foundation construction problems such as the high environmental protection requirements of the Yellow River Wetland Nature Reserve, the first application of distributed post-grouting technology in China, and the difficulty in implementing the traditional method of removing steel casings, this project creatively developed a self-circulating mud system; using distributed Post-grouting technology, the grouting tube and the acoustic measuring tube are combined into one, the pile side and pile end are grouted simultaneously, and the intelligent construction technology is used to monitor and control the grouting process in real time; by using the air compressor air cap technology Remove the steel guard. Finally, the construction of 72 pile foundations of the main bridge was realized, which provided a reference for the construction of pile foundations of the same type, especially the Yellow River Wetland Nature Reserve.

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