Drilling
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 the 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 the 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 boreholes in order to perform direct surveys e.g. SPT probing, NNS sampling or filtration measurements. Within these boreholes 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 the 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
with their diameters of 70 and 100 mm plus impact windowing probes down to the depth of around 8 m below the level of the ground. Thanks to these methods we are able to accurately identify the structure of a particular ground medium (material) for standard small objects at plain foundation conditions, for linear buildings (roads, pipelines, railways or embankments) or in places which are inaccessible for conducting works by means of mechanical drilling derricks. By making use of the above-specified method we have performed several thousands of geotechnical boreholes. Typically, these boreholes are within 3 – 6 m below the surface of ground.
Application
Identification of geotechnical structures
Equipment
- Manual drills by means of Eijkelamp
