The Advantages of Reverse Circulation Hole-cleaning Technology in Rotary Bored Piles

In the construction of rotary drilling piles, hole cleaning is a key step to ensure the quality of pile foundations. The reverse circulation hole cleaning process, with its own characteristics, plays a significant role in the construction of rotary drilling piles. Its advantages are mainly reflected in the following aspects.

1. High efficiency in hole cleaning. Reverse circulation hole cleaning utilizes the principle of pump suction or air lift to rapidly discharge the mud carrying the drilling debris out of the hole. Compared with positive circulation, the debris discharge speed is significantly increased, which can effectively shorten the hole cleaning time and accelerate the construction progress.

2. Excellent hole cleaning quality. The mud returns from the center of the drill pipe, causing little disturbance to the hole wall. It can precisely remove the sediment at the bottom of the hole, ensuring that the thickness of the sediment at the bottom of the hole strictly meets the design standards and significantly improving the load-bearing capacity of the pile foundation.

3. Excellent cost control. This process has relatively low requirements for the performance of the mud and can reduce the cost of mud treatment. In addition, efficient hole cleaning can reduce mechanical and labor costs and effectively control construction costs.

4. Good environmental protection performance. The mud can be recycled, which greatly reduces the discharge of waste mud and lowers the pollution to the surrounding environment, in line with the current concept and requirements of green construction.

5. Wide range of applications. Whether it is a sand layer, a pebble layer, or a clay layer and other complex geological conditions, the reverse circulation hole cleaning process can function stably and demonstrate good geological adaptability.

6. It is highly convenient to operate. The reverse circulation hole cleaning technology is mature, and the equipment operation process is simple and easy to understand. Construction personnel can master it proficiently after short-term training, which is conducive to wide promotion in engineering practice.

In conclusion, the reverse circulation hole cleaning technology, with its outstanding advantages of high efficiency, high quality, economy, environmental protection, wide application and easy operation in the construction of rotary drilling piles, has become an important technology to ensure the quality and efficiency of construction. With the development of the engineering construction industry, its application prospects will be even broader.