Static and Dynamic Penetration Tests, Drilling Works
We perform drilling and probing for engineering geological, hydrogeological, environmental and construction surveys.
- Track-mounted rig Pagani TG63-150:
- The rig enables static penetration (CPTU), dynamic penetration (DPSH-B), and drilling, including soil sampling.
- Static penetration is performed according to ČSN EN 22476-1 Geotechnical investigation and testing – Field testing – Part 1: Static penetration test with electrical data acquisition and pore pressure measurement (05/2023).
- Dynamic penetration is performed according to ČSN EN 22476-2 Geotechnical investigation and testing – Field testing – Part 2: Dynamic penetration test (06/2005).
- The maximum thrust capacity of the rig is 150 kN.
- The principle of the static penetration test involves pushing the penetration tip using a column of steel rods with a circular cross-section diameter of 35.7 mm into the soil at a constant speed of 20 mm/s ± 5 mm.
- During the static penetration test, the following parameters are measured:
– Specific tip resistance,
– Specific sleeve friction,
– Pore pressure at the cylindrical part of the penetration tip,
– Penetration depth,
– Tip inclination angle using a built-in inclinometer,
– Pushing speed and measurement time. - The principle of the dynamic penetration test involves driving a rod with a diameter of 32 mm, equipped with a solid cone tip with a diameter of 50.5 mm, an area of 20 cm², and an apex angle of 90°, using a hammer weighing 63.5 kg with a drop height of 75 cm;
- During the dynamic penetration test, the following parameters are measured:
– Number of blows N10 or N20 required to drive the tip 10 cm or 20 cm,
– Penetration depth,
– Torque Mv measured at 1.0 m intervals. - The interpretation of penetration tests is carried out for the purposes of:
– Identifying the lithotype of the layer and boundaries between layers,
– Constructing a lithological profile,
– Determining derived geotechnical parameters.
Light track-mounted rig MRZB:
- Hydraulic rig on a track chassis suitable for difficult terrain and moderately challenging geological conditions (stiff clays, compact sands).
- Depth reach of approximately 8 meters.
- Collection of undisturbed soil samples.
- Penetration tests (DPT), injection tests.
Penetration rig LMSR-Vk:
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Standard hammer weight of 50 kg, standard drop height of 50 cm (DPT).
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Results in the form of a report with a table of measured values and a graph.
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Interpretation into a geotechnical profile with geotechnical parameter values.
Drilling equipment HILTI DD 150-U:
- Drilling holes and penetrations through building structures – sampling of concrete and asphalt, vertical and horizontal structures, linear constructions.
- Core diamond bit, continuous water cooling, possibility of drilling with cooling water “with water recycling” using an industrial vacuum cleaner in enclosed spaces.
