The mechanical performance advantages of rotary drilling rig are outstanding, the number of workers is not high, and the construction process is organized: 1. Pile foundation location; 2. Buried steel casing; 3. Mud production; 4. Rig position; 5. Drilling for soil; 6. Slag removal; 7. Steel cage safety; 8. Catheter installation and insertion; 9. Underwater concrete perfusion; 10. Pull out the guard, so that the whole pile is formed.
Because of its advantages of fast construction speed, high quality of drilling, low environmental pollution, flexible and convenient operation, high safety performance and strong applicability, rotary drilling rig has become the main drilling equipment for piling construction in the engineering industry. At present, rotary bored pile is widely used in railway, highway bridge, municipal construction, high-rise building and other foundation engineering.
