Trenchless construction

Trenchless construction

Underground construction that involves little or no surface trenches so it has minimal disruption to traffic, business, and other activities. Trenchless technology is a fast growing sector of construction and civil engineering that covers such methods as boring, drilling, tunneling, and pipe ramming.

Industry: Construction

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Trenchless construction

Directional drilling

Construction; Trenchless construction

A steerable system for the installation of pipes, conduits and cables in a shallow arc using a surface launched drilling rig. Traditionally the term applies to most crossings in which a fluid-filled ...

Slurry boring

Construction; Trenchless construction

A technique that forms a borehole from a drive shaft to reception shaft by means of a drill bit and drill tubing (stem). A drilling fluid (i.e., bentonite slurry, water, or air pressure) is used to ...

Jacking

Construction; Trenchless construction

The actual pushing of pipe or casing in an excavated hole. This is usually done with hydraulic cylinders (jacks), but has been done with mechanical jacks, air jacks, and just about anything else ...

Auger machine

Construction; Trenchless construction

A machine used to drill earth horizontally by means of a cutting head and auger or other functionally similar device. The machine may be either cradle or track type.

Exit pit

Construction; Trenchless construction

An opening located at the exit of the cutterhead or casing.

Jacking pipes

Construction; Trenchless construction

Pipes designed to be installed using Pipe Jacking techniques.

Horizontal rotary drilling

Construction; Trenchless construction

The mechanical installation of pipe or casing by rotating methods which do not use augers for the removal of spoil. Usually uses a fluid of water and Bentonite to remove spoil.