Mechanical drilling

Mechanical drills executed by means of hydraulic drillings derricks mounted at (crawling) vehicles are another type of drills within the range of our services. Geopartner Co. has got two hydraulic derricks (H25CS) made by Wamet from Bydgoszcz mounted at four-wheel driven vans. We make use of these drilling derricks for geotechnical recognition through rotary drills with standard threaded shafts at their diameter of 110 mm down to the depth of around 25 m below the level of ground. These drills are the most popular method to obtain geotechnical data and gather samples for laboratory tests.

Mechanical drills executed by means of hydraulic drillings derricks mounted at (crawling) vehicles are another type of drills within the range of our services.

Geopartner has two hydraulic derricks (H25CS) made by Wamet from Bydgoszcz mounted at four-wheel driven vans. We make use of these drilling derricks for geotechnical recognition through rotary drills with standard threaded shafts at their diameter of 110 mm down to the depth of around 25 m below the level of ground. These drills are the most popular method to obtain geotechnical data and gather samples for laboratory tests.

In particularly important cases and at complex arrangements of geotechnical layers we perform drills by means of empty (looping) threaded shafts (CME). Our company has a drilling derrick mounted at a crawling vehicle (model T-41) made by Beretta, Italian company. By means of the above-specified equipment we are able to conduct dry drilling through empty threaded shafts (CME) down to the depth of around 35 m below the level of surface. Drilling can be done using a core sampler which allows a continuous dry yield of structurally intact cores with their diameter of 88 mm. Drilling by means of empty threaded shafts with the use of leading poles makes it possible to drill piped bore holes in order to perform direct surveys e.g. SPT probing, NNS sampling or filtration measurements. Within these bore holes it is possible to place piezometers (with their diameter of 90 mm) to monitor underground waters.

Our Beretta drilling derrick also allows us to perform rotating drills with drilling fluid and cored drills. At cored bore-holes we make use of wire-line coring with NQ and PQ diameters; the maximal depth of fully sampled bore-holes is around 80 m above the level of ground. If required, we are also able to perform bore-holes through down-hole hammering. This type of drilling is performed to recognise the geology of hard rocks or to make deep wells or bore-holes for heating pumps.

Application

Identification of geotechnical structures

Equipment

  • Hydraulic drills by Wamet
  • Hydraulic drills mounted at crawling vehical by Beretta