1. The operator should always be reminded to check whether the threaded joints of the drill pipe and drill bit are worn out and replaced in time if there is any problem. When working with Tapered Button Bits, you should aim at the pile position, first make the drill rod down, the drill bit touches the ground, and then rotate the drill rod. Do not turn or shake the drill rod while lowering.

2. When Tapered Button Bits are drilling, the drilling speed should be controlled according to the changes in geological conditions to prevent sticking. The operator should pay close attention to the pressure and speed meters in the cab and the changes in the drilling load, and press and lift the drill in time.

3. When working with Tapered Button Bits, if the drill pipe vibrates sharply or there is a rhythm or abnormal sound in the drill hole, stop drilling immediately. After the cause is found out, the drilling can be continued after treatment.

4. During the drilling process of Tapered Button Bits, due to stuck drill or other reasons, when lifting the drill pipe, strictly control the lifting capacity of the main winch not to exceed.

5. During drilling operations, do not lift the drill violently, and do not operate in parallel.

6. When using the auxiliary hoist to lift heavy objects, the lifting capacity shall not be exceeded. The heavy objects shall be directly in front of the top pulley, and the angle between the wire rope and the column shall not be greater than 300 degrees.

7. In case of severe weather such as heavy rain, fog and strong winds above grade 6, operations should be stopped. When the wind exceeds level 7 or there is a strong typhoon warning, the Tapered Button Bits should be parked downwind, and the column should be lowered to the ground, and the power head should be lowered to the lowest point. If possible, it is better to remove the drill. In thunder and lightning weather, personnel must stay away from Tapered Button Bits and install lightning rods.

8. Irrelevant personnel are strictly prohibited to pass through within the operating radius. Personnel and vehicles on the construction site can only pass under the command of the commander.

9. Maintain the water head pressure in the hole, maintain the stability of the hole wall, and prevent the occurrence of buried drill accidents.

10. When lowering the protective tube, adjust the angle of the column to prevent the protective tube from colliding with the power head oil pipe.

11. The drilling volume of the first round should be referenced by the depth gauge, and guided by drilling speed and weight-on-bit torque. No more drilling, no more drilling. More drilling, longer auxiliary time; less drilling, less repetition footage, lower efficiency.

Drilling Tools Manufacturer should stop drilling after drilling to the design elevation, and use the slurry change method to clean the hole in time. Specific method: After drilling the final hole, use the hole-forming drill to directly carry out. When cleaning the hole, first lift the drill bit from the bottom of the hole 10-20cm, turn the turntable to punch the hole, the mud circulation is carried out continuously, and the drilling tool is often connected in series. Improve the effect of a clean hole. The time of one hole cleaning should not be fixed. It should be determined whether the hole cleaning can be completed according to the thickness of the bottom of the drilling tool drop test hole and the ratio of return slurry; the specific gravity of the cleaning slurry should be less than 1.15, and the proportion of return slurry should be less than 1.30, hand touch The mud has no particle feeling, and the thickness of the sediment is less than 8cm, and the hole can be cleared once.