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 is typically used on large scale, high production compaction grouting projects. Vibratory drilling (figure 5) utilizes a hydraulic vibratory hammer mounted on pile driving leads or a fixed beam and suspended by crane or other support such as an excavator. A continuous grout injection pipe or mandrel is vibrated into the soil with the vibratory hammer. Disposable points or caps are typically utilized to prevent soil from plugging the injection pipe as it is advanced. As in the other percussion drilling techniques, this method provides intimate soil contact with the pipe since the surrounding soils are displaced by the advancing mandrel. Unlike other methods, the injection pipe is normally extracted using the same equipment used for advancing. When used in easily compressible or loose soils this is an extremely effective method for high production compaction grouting. Due to the large equipment required, sites must normally have unrestricted surface access.