A high-strength steel anchor inserted into drilled holes in the ceiling of a mine working. It binds layered or fractured rock strata together into a single, self-supporting beam. Operators tension the bolt mechanically or secure it with resin grout to stabilize the overhead span before personnel enter the area.
Heard on the job
We need to install another row of roofbolts before advancing the face.
Insider tip
A loose or missing nut on a tensioned roofbolt is an immediate red flag for ground movement or improper installation.
Also heard as
- rock bolt
- roof bolt