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Percussion Drilling Techniques

Auger Drilling Techniques | Percussion Drilling Techniques | OdexTM or TUBEX | Grout Pumps | Grout Sources
Vibratory Drilling Techniques (Crane & Mandrel) | Air Rotary or Rotary Wash | Grout Mixes | Slump Test

This technique typically has two variations. The first involves simply driving a steel pipe or casing into the soil, normally with a disposable or lost point. The pipe is driven with either hydraulic or pneumatic percussion equipment (figure 4) to a design depth by displacing the soil directly in front of the pipe point. The soil remains tight around the pipe and provides a good seal. This method is highly utilized for its low cost, effectiveness and the ability to use small equipment in limited access areas. Pipe driving depth is typically limited by the size of the percussion equipment and the ability of the equipment to overcome the skin friction between the steel pipe and the surrounding soils. Pipe driving also subjects the surface and surrounding soils to some vibration but is very effective in advancing injection holes in collapsible soil conditions. This method also does not allow for any visual observation of drill cuttings.