Horizontal Directional Drilling Machine working principle and process

1. The construction principle of Horizontal Directional Drilling Machine and directional drillin

Pilot drilling is primarily done with jet-assisted cutting bits. If the drill string is fed and rotated at the same time, the ramp loses its directionality and enables a straightened hole; if the drill string is only rotated, the reaction force acting on the ramp causes the bit to change direction. There is a probe or transmitter in the pilot bit.

2. Advantages and disadvantages of Horizontal Directional Drilling Machine

Advantages: little interference to the surface, fast construction speed, controllable pipeline laying direction, and high construction precision. Disadvantages: The construction site requires a lot, it is difficult to construct in non-cohesive soil and gravel layer, and it is generally suitable for various soil layers without large pebbles.

3. Horizontal Directional Drilling Machine construction process

Construction preparation→measurement and setting out→equipment installation→drilling rig anchoring→mud preparation→pilot hole construction→hole reaming construction→pipe pullback.