Views: 0 Author: Site Editor Publish Time: 2025-04-15 Origin: Site
In the construction of power grid, rotary drilling rig undertakes the important task of pile driving. However, stones are often encountered in the construction process, which affects the progress and quality of piling. Then when the rotary drilling rig encounters the stone when playing the grid pile, how to deal with it cleverly?
1. Replace the appropriate drill bit: Select the drill bit according to the hardness and type of the stone. Soft stones can be used with a cutter bit, hard rock is used with a cone or alloy bit, and the adaptive bit can enhance the cutting and crushing ability.
2. Adjust drilling parameters: reduce drilling speed to prevent drill pipe damage. Appropriately increase the pressure, let the drill better cut into the stone, with the right combination of parameters to improve the efficiency of piling.
3. Auxiliary crushing: the impact hammer can be used to assist. First impact and break big stones, and then use rotary drilling rig to drill, reduce the difficulty of drilling.
4. Try a high-pressure water jet: Hit the stone with a high-pressure stream of water. Loose or soft stone is easily broken when it encounters water jet, creating conditions for rotary drilling.
5. Adjust the construction process: use stratified drilling, first treat the upper stone and then go deeper. Or jumping pile construction to avoid being blocked for a long time.
6. Use of detection technology: detection with geological radar before construction. Know the location and size of the stone in advance, plan a reasonable piling route, and reduce emergencies.
Conclusion: When the rotary drilling rig meets the stone when driving the power grid pile, it can be dealt with by changing the drill bit, adjusting the parameters, auxiliary crushing and so on. According to the actual situation, the flexible selection or combination of these strategies can effectively overcome the stone obstacles and ensure the smooth progress of the grid pile construction.
