When information regarding the rock at any given site is desired rock coring can be conducted in order to evaluate the type, quality, soundness, strength and other properties of the rock. Rock coring is generally accomplished with a diamond tip rock core barrel attached to a drill rig. The coring recovers a cylindrical core of rock by rotating and advancing the hollow core barrel.
The rock samples provide significant information about the engineering nature of the rock formation. Some important properties obtained from the rock coring are the type of rock, Rock Quality Designation (RQD), percent recovery and hardness/soundness of the rock. This information is used in a wide array of engineering applications such as foundation bearing capacity and rock anchors.
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