Exploratory drilling has an important place in civil engineering and construction, allowing you to investigate the grounds in advance and helping to plan the works correctly.
Geotechnical
Danbar drilling Services provide site investigation drilling for all sizes of project within the UK. We specialise in high quality sampling and testing.
We are highly experienced in investigation of all ground conditions within the UK.
With the state of the art rotary equipment we have we can use various techniques to recover samples and undertake in- situ testing. We only employ highly skilled operatives and we are able to work in areas with limited access as our Beretta T44 can fit through spaces only 1 meter wide. (See Equipment section).
Rotary drilling techniques are employed on site investigation where boreholes are required into very dense gravel or bedrock. Samples of the bedrock are recovered in seamless plastic tubes for subsequent logging by a suitably qualified engineer for lab testing.
We also provide open hole drilling.
Completed boreholes may have an installation ranging from a basic groundwater monitoring pipe through to more sensitive instrumentation such as a vibrating piezometer.
Key Features of our Rotary Machines:
- Rotary core drilling sizes 412 hwf, T101, Pwf & Swf
- Open hole drilling from 4-8″ diameter.
- SPT’S, CPT’S U4′S.
- Packer testing from 76mm to 131mm
- Variable head & Constant head permeability testing.
- Borehole vane testing.
- Core orientation.
- DTH from 78mm to 150mm diameter.
- Simultaneous drilling and casing from 4-8″ diameter.
- Flush using air, air mist, water, foam and polymer.
- BDA, CSCS and NVQ qualified staff.
At Danbar Drilling Services we continually strive to provide the most appropriate drilling technique to suit the geological conditions and objectives for the particular project.
Environmental Investigations
Intrusive environmental site investigation needs to utilise various techniques in rotary drilling. It can be a very sensitive area to work within and a lot of clients need to drill without fluid, as it can create a mess and increase the risk of contamination. The technology that Danbar Drilling has available is ideal for environmental investigation.
Our Sonic drilling rig is one of only 6 in Europe at the moment and it is especially suited to investigating heavy metal, organic and other types of contamination including land fill debris. It is also the fastest drilling method on earth for environmental investigations. With this piece of fine machinery will can drill without flush and take continuous core samples, making it faster and cleaner than conventional rotary drilling. (See the Sonic Drilling section for further information).
We will install standpipes for monitoring groundwater or soil gases.
Danbar Drilling are highly recognised as the best in the field when it comes to all drilling methods, we have undertake investigations in various types of developments including petrol stations, factories, foundries, treatment works and landfills.
Danbar carry out on site testing such as:
Permeability tests (Falling head, rising head, constant head and packer testing).