“Direct Push” is a hydraulic-powered subsurface investigation method where both static force and percussion are used to advance sampling and logging tools into the subsurface. No rotation is needed to advance and there is no drilling debris on the surface.

The DP technology geo-log is using employs high-frequency (~ 30 Hz) percussion hammers and hydraulic slide systems, available in track-mounted configurations, to rapidly advance probes into the subsurface.

DP-techniques are multifunctional investigation methods able to provide a detailed characterisation of the underground. The DP-based techniques can be applied in the unsaturated/saturated zone and are especially efficient in unconsolidated clayey, sandy and gravely deposits. They offer the possibility of continuously recording investigation relevant parameter, sampling of the soil, soil gas and groundwater and installing groundwater or soil gas monitoring wells up to an inner diameter of 2 inches. As advantages of DP technology over conventional drilling methods few important points should be highlighted:

• Light: Small machines and small diameter tools
• Fast: Penetration rates in a range of meters per minute
• Mobile: Mobilization and moving between locations is fast and economical

Probes within buildings

Foto gallery "Particular Operating Conditions"