EXI-bolt verification

Important results from the project

The purpose of the project was to validate the dynamic properties and the fast mounting time for a new type of rock bolt, EXI-bolt. Rock bolts are used to reinforce the rock in mines and tunnels to prevent fallouts. In the project we have, in actual mine environments, proven that the patented rock bolt is very fast to mount, have very good dynamic properties that increases the safety and is very cost efficient. We also have been able to start the certification tests required for use underground.

Expected long term effects

We have confirmed that EXI-bolt gives higher safety, is fast to mount and is environment friendly. EXI-bolt has been constructed to be easy to manufacture. The results allows us to continue with large scale testing in full production mines.

Approach and implementation

We have cooperated with Luleå Technical University and LKAB to get a basic understanding of rock support underground. Together with local experts we have made a design that is based on standardized material and manufacturing methods. Prototypes have been manufactured and tested in both laboratory and in a mine. The time for design changes, manufacturing and delivery have been unnecessary short but the end result was very successful product.