Rotary drilling is undertaken in rock, where percussive boring techniques will not penetrate.
Rotary coring methods are used to recover cores of the rock to be logged and tested.
Rotary open hole techniques are useful in mining investigations to identify the presence or absence of voids and/ or broken ground.
Rotary Borehole Rig Craned-In, in Devon
Restricted access meant that the drilling rig had to be craned onto the site.
Cores of the rock were recovered and logged by our engineering geologist to confirm the strength, composition, and state and geometry of discontinuities within the bedrock, for use in the design of the proposed retaining wall, which was supporting a public highway and required to facilitate the development.
Downhole geophysics was subsequently undertaken to provide further information on the fracture orientation and in-situ condition.