Study on Hole Cleaning Construction Technology of Bored Cast-in-Place Pile

Bored pile is a fundamental construction technique widely employed in modern engineering projects, including high-rise buildings, highway bridges, and other infrastructure constructions. Within the bored pile construction process, hole cleaning plays a critical role. By optimizing the hole cleaning procedure, it is possible to ensure hole quality, improve construction efficiency, reduce environmental impact, and enhance construction safety. This paper focuses on large pile diameters or super long pile foundations as the research object and presents a detailed introduction to the air lift reverse circulation secondary hole cleaning method. The construction parameters for air lift reverse circulation hole cleaning of large pile diameters and super long pile foundations are optimized through pile tests, offering a new perspective on hole cleaning construction for super long and large diameter bored piles.