Full displacement drilling
A single-pass drilling method
Full displacement drilling is a modified version of continuous flight auger drilling and is exclusively used for producing cast-in-place piles. The surrounding soil is only displaced and almost no drill cuttings are conveyed to the surface. Instead of a continuous auger a smooth casing is used. At the lower end the casing is fitted with a so-called displacement body.
Procedure for full displacement drilling:
Video full displacement drilling
The video shows various Liebherr carrier machines working with full displacement tools.
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Displacement body
Drilling
Extraction of the casing
Concreting
Reinforcement
