Views: 0 Author: Site Editor Publish Time: 2025-06-30 Origin: Site
In the field of deep foundation pit support for construction projects, rock-embedded interlocking piles play a key role. With its own advantages, rotary drilling RIGS have been widely used in the construction of rock-embedded interlocking piles, making significant contributions to improving construction efficiency and ensuring project quality. The following is a detailed introduction to its application points for you.
1. Preparatory work: Before construction, a comprehensive geological investigation of the construction site should be conducted to clarify the characteristics of the rocks and other conditions. Based on the exploration results, the model of the rotary drilling rig with the corresponding rock penetration capacity should be reasonably selected, and it should be precisely transported to the construction site for assembly and debugging.
2. Drilling operation: After the rotary drilling rig is in place, it is essential to ensure that the body is stable and vertical. During the drilling process, the drilling parameters should be adjusted in a timely manner according to the characteristics of different strata. For example, the speed can be appropriately increased in soft soil layers, but after entering rock layers, the rotational speed should be reduced and the pressure increased to ensure that the verticality and hole diameter of the borehole meet the design requirements.
3. Use of casing: For the construction of rock-embedded interlocking piles, steel casing is often required for assistance. The rotary drilling rig uses its powerful torque to slowly press the steel casing into the stratum. The casing is a certain distance ahead of the drill bit, providing a stable wall protection for the borehole, preventing the borehole wall from collapsing, and also facilitating the subsequent cutting of the interlocking part of the plain concrete pile.
4. Cutting and interlocking: First, construct the plain concrete piles. Once they reach a certain strength (1.2-3MPa), replace the rotary drilling rig with a short spiral drill bit in the soil layer and perform circumferential cutting on the interlocking part of the pile body of the plain concrete piles. When cutting, strictly control the feed rate and adopt medium and low speed drilling to avoid excessive damage to the integrity of the plain concrete piles.
5. Installation of the steel cage: After completing the drilling and cutting processes, use the hook of a rotary drilling rig or a crane to vertically lift the pre-made steel cage, align it with the hole opening, and slowly and steadily lower it to the designed depth. Through measurement and adjustment, ensure that the steel cage is in the correct position and firmly fixed.
6. Concrete pouring: After the steel cage is installed in place, concrete pouring should be carried out immediately. Select the appropriate concrete pump to continuously and rapidly pump the concrete to the bottom of the hole through the conduit. During the pouring process, pay attention to observing the rise of the concrete to ensure the continuity of the pouring until the designed top elevation of the pile is reached.
In the construction of rock-embedded interlocking piles, rotary drilling RIGS have demonstrated strong rock penetration capabilities, high construction efficiency, and can better control the quality of the pile body while reducing construction costs. Its application has effectively promoted the development of deep foundation pit support engineering technology and laid a solid foundation for the smooth progress of various construction projects.
