As a supporting drilling machine, the small anchoring drilling rig has many drilling methods in the field of slope protection, and its construction technique depends on the performance of the drilling rig. Let's discuss the drilling methods of a small anchoring drilling rig:

1. Spiral Drilling: 

This is a very common drilling method. It uses a spiral twist drill rod to advance, effectively removing the soil inside the hole to the outside, thus achieving the requirement of drilling deep holes.

2. Water Injection Drilling: 

This method uses a special water injector designed for drilling rigs, connects a water pipe for water drilling, and uses water to achieve soil removal.

3. Air Injection Drilling: 

This method involves using a special air injector for the drilling rig, connecting to an external air compressor for air drilling, and using air to blow out the powder, which results in a better effect.

4. Casing Following: 

Casing following involves pushing tubes inside the hole, and can achieve horizontal and vertical casing advancement. It uses a hydraulic method for advancement, with a strong pushing force, suitable for deep-hole tubing.

5. Impact Following:

Impact following uses an impact hammer/submersible vertical advancement, connected to a 10-13 cubic meter air compressor. It can be used for drilling in rock soil, medium-hard, hard rock, soil layers, and other fields.