Title:

Analysis of split set bolt performance

Author: Tomory, Paul B.
Issue Date: 1997
Abstract (summary): Split Set$\sp*$ friction stabilizer bolts are used by many underground mining operations in North America for temporary and long-term support. In order to develop a rational design procedure for this type of ground support, an extensive compilation of pull test results from a wide range of mines throughout North America has been assembled and analyzed. To assist mine engineers in the design process, a set of practical considerations and recommendations has been developed. These include a set of charts quantifying the influence of various factors on the effectiveness of Split Sets as well as the results of a statistical analysis used to find significant trends and relationships in the available information. For the purposes of design, the anticipated range, or distribution, of the strength of Split Sets has been determined for a wide range of initial conditions, which include rock mechanics and operational parameters. A case study is presented illustrating the use of the results in a probabilistic analysis, yielding a percentage value for the reliability of support, or the probability of failure, rather than a single value for the factor of safety. The information presented will assist mining engineers in designing safer and more efficient ground support with Split Sets. ftn$\sp*$The Split Set name is a trademark of Ingersoll Rand
Content Type: Thesis

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