Ideas & Applications: Ditch Witch machine manages multiple hoses

摘要

Trenchless technology has become big business in the construction industry. Trenchless technology uses a horizontal directional drill (HDD) to dig a tunnel for underground pipe, cable, or other utility. This is accomplished by pushing a steerable bit into the ground and adding one section of pipe after another to advance the drill column further into the ground. The bit eventually exits the ground near its destination, usually hundreds of feet away, without disturbing the surface landscape between the entry and exit points. If a highway lies between the two points, the HDD tunnels under it, preventing any disturbance to traffic.