CW Drill Projects

Two Geotechnical holes required, PQ Cored to 35-40m depth through landslide to assist Geotechnical Engineers. Location required helicopter access so we used our fly rig (QM750).

Drilled 20 boreholes using two different methods, HQ TT Core in cohesive materials, and concentric casing advancement in loose colluvium. All holes were drilled in or above landslide debris.

Two geotechnical bores of over 50 metres were required. Location was particularly tricky, with one site being 80 metres above the road, while the other was adjacent to the very busy Kawarau Gorge Road.

Assistance was requested to complete drilling and installation of 54 multistrand anchors. Part of the seismic upgrade of Transpower’s Haywards Power Station in the Hutt Valley.

Required to drill and install temporary casing through a variety of formations to allow the installation of 80mm conduit to carry broad band cables for Golden Bay.

Drilling three HQ Core holes to maximum depth 35m, on two adjacent properties to determine structure of upper slope of Rocks Road. This project used our man portable rig (Hydro 200).

Drilling and installation of anchors for a retaining wall. The project required the drilling, installation, grouting, testing, lock off and post grouting of 30 anchors of varing size, to anchor a replacement wall.

PQ and HQ core recovery required for a Mass Movement study on a difficult access site in the Bray/Quarry Road area in Ferrymead.

Carry out investigative geotechnical drilling for proposed foreshore development (development is now completed).