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Entry Design For Optimum Stability In A Multi-Seam Environment
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Citation (Style = APA)
Akram, Mohummad (1993). Entry Design For Optimum Stability In A Multi-Seam Environment. Proceedings of 12th International Conference on Ground Control in Mining
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Akram, Mohummad (1993). Entry Design For Optimum Stability In A Multi-Seam Environment. Proceedings of 12th International Conference on Ground Control in Mining
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 7
Publication Date:
Jan 1, 1993
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Abstract
Abstract
| Statistical analysis of multi-seam mining case studies demonstrated that geologic structure and lithological type and sequencing were predominant factors in entry failures. Finite element analysis was used to evaluate the effects of stress field changes on entry instability under differing geologic conditions. Analysis showed the roof to be particularly vulnerable to shear with the location of the failure site changing to meet loading and geologic conditions. Effects of external support on roof stability were examined. Results were correlated with field data to determine stress levels at which failure could be expected to occur. Based on this research design, criteria were developed for roof stability evaluation under specified interactive loading conditions. |
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