Behind the Scenes of Directional Boring

Using horizontal directional drilling (HDD) to lay pipe or create a tunnel provides a trenchless conduit laying method enabling the construction of the bore line without the destruction of any existing street, body of water, movement of houses, or buildings, etc. As the video illustrates, all work takes place underground, using a rotating, cylindrical bit with a tri-cone body attached to an extremely long lead line. This bit spews water out of the cone area to speed directional boring and cool the bit as it drills through the ground.

Using only a small staging area for collecting this water, the drill operator follows a pre-planned path for the horizontal drilling job.


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Once launched, electronic tracking above-ground tracks sensors on the bit to ensure the operator can keep the bit on its pre-planned path. The bit exits the ground at its endpoint in a staging area much like the one from which it launched. These small staging areas typically measure about four feet in length, so they require little excavation and help alleviate the need for destruction of any existing property or landscaping.

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