New Approach in Rock Bolting that Adds to Bearing Capacity and Yield of the Bolts without Increase to the Cost of the Technology
- Organization:
- International Conference on Ground Control in Mining
- Pages:
- 4
- File Size:
- 764 KB
- Publication Date:
- Jan 1, 2008
Abstract
A new technique for reaming the holes has been tested. This technique is available for reaming a hole at its deep end creating an enlarged cavity that has helicoidal grooves oriented at less than 40 degrees to the hole axis. This technique increases bolt resistance by a factor 1.3-1.62; its bearing capacity by 3 times and enhances underground roadway stability. This technique is suitable for great depth (1000m and greater) and weak wet rocks.
Citation
APA: (2008) New Approach in Rock Bolting that Adds to Bearing Capacity and Yield of the Bolts without Increase to the Cost of the Technology
MLA: New Approach in Rock Bolting that Adds to Bearing Capacity and Yield of the Bolts without Increase to the Cost of the Technology. International Conference on Ground Control in Mining, 2008.