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EXI-bolt verification

Reference number
Coordinator ROCK SOLUTIONS NORTH AB - Rock Solutions
Funding from Vinnova SEK 438 300
Project duration December 2015 - August 2017
Status Completed

Purpose and goal

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 results and 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.

Planned 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.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 8 January 2019

Reference number 2015-05742

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