3 Terms
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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
Jetting
Construction; Trenchless construction
A process using high pressure water to wash out the face of a utility crossing without any mechanical or hand excavation of the soils in the face. This process has also been used to remove the ...
Pipe jacking
Construction; Trenchless construction
A system of directly installing pipes behind a Shield Machine by hydraulic jacking from a Drive Shaft such that the pipes form a continuous string in the ground. Usually personnel are required ...
Auger boring
Construction; Trenchless construction
A technique for forming a bore from a drive pit to a reception pit, by means of a rotating cutting head. Spoil is removed back to the drive shaft by helically wound auger flights rotating in a steel ...
Segmental concrete tunnel liners
Construction; Trenchless construction
Used the same way as Liner Plate except that they are made of concrete.
Drill bit
Construction; Trenchless construction
A tool which cuts the ground at the head of a Drill String, usually by mechanical means but may include Fluid Jet Cutting.
Casing pipe
Construction; Trenchless construction
A pipe installed as external protection to a Product Pipe or Carrier Pipe.
Auger
Construction; Trenchless construction
A flighted Drive tube having hex couplings at each end, to transmit torque to the cutting head and transfer spoil back to the machine.
