What are the problems often encountered in the construction of Horizontal Directional Drilling Machine

1. Hole body deflection: In the event of hole body deflection caused by horizontal Directional Drilling Machine, it is generally possible to hang the drill cone at the deflection point and carry out repeated sweeping to make the drilling regular; if the deflection is more serious It is necessary to backfill the cohesive soil to the deviation in time, and stop the drilling operation after the accumulation is dense.

2. Hole reaming and shrinkage: In case of reaming and shrinkage, measures should be taken to prevent hole collapse and excessive drill cone swing. The former needs to pay attention to timely welding and repairing the drill cone, and the latter needs to use mud retaining walls with a low water loss rate. The shrinkage cavity that occurs needs to be scanned up and down repeatedly with a drill cone to expand its aperture.

3. Paste drilling and buried drilling: Paste drilling and buried drilling often appear in reverse drilling and percussion drilling in positive circulation (including submersible drilling rigs). Now it is necessary to check and calculate the consistency of the mud, the inlet and outlet of drilling slag, the size of the inner diameter of the drill pipe and the slag discharge equipment;

4. Drill sticking: It often occurs in the operation of percussion drilling of Horizontal Directional Drilling Machine. After the drill is stuck, you can't stop the forced lifting operation, you can only lift it lightly.

5. Dropping objects: When dropping objects, it is advisable to use tools such as hooks or ropes to salvage them flexibly. If the dropped objects have been buried by sand, it is necessary to clean up the sand before salvaging the tools.
Under no circumstances should horizontal Horizontal Directional Drilling Machine operators enter the borehole without casings or other protective equipment to deal with faults. When drilling a casing or other protective equipment, it is necessary to check that there is no harmful gas in the hole and prepare anti-virus, anti-drowning and anti-collapse equipment before taking action.