When using a locking rod rotary drilling rig, it's easy to misalign the hole if you're not careful. To ensure optimal use of a locking rod rotary drilling rig, how can we prevent misalignment?#pile driver rig#
First, select appropriate guide teeth. Second, keep the mast of the locking rod rotary drilling rig vertical. Then, use the upper pressure transfer method. Choosing drill tools based on hydrological and geotechnical conditions can improve drilling and steering capabilities, ensuring the proper tolerance between the square head and the square sleeve, with close spacing for better guidance. A straight drill body structure, large diameter, and increased height provide excellent hole wall restraint and guidance. For severely misaligned soils, a forced guide can be added to the drill bit to prevent or mitigate misalignment. Select drill teeth based on soil strength and drilling tool type, optimizing their arrangement to improve drilling capacity, reduce resistance, and increase axial penetration, thereby preventing or mitigating hole deviation. When drilling in geology prone to hole deviation, promptly replace the appropriate drill bit and maintain controlled operation, using minimal axial pressure and controlled single-bucket drilling depth and penetration speed to prevent or mitigate hole deviation. The main machine can be equipped with a casing driver, pipe twister, or full-rotation drill rig to install and guide casing to prevent hole deviation.#pile driver rig#
Pre-emptive plan for hole deviation: If a hole deviates sharply, use a pick-and-drill cartridge to sweep the hole to correct the location of the sudden deviation. A steel casing with a back wall of at least two meters, equal to the pile diameter, can be welded to the top of the drill bucket and drilled with the drill bit for forced guidance. Alternatively, sweeping the entire pile from top to bottom can be performed to repair the hole deviation. Backfill the deviated hole with low-strength C15 concrete until the hole is free of deviation. Once the concrete reaches initial set strength, use a pick-and-drill cartridge to drill and coring. Correct the hole deviation under the constraints of the hole wall. The above is the method to prevent the occurrence of deflected holes in the lock rod rotary drilling rig. I hope it will be helpful to you.#pile driver rig#
