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Computer Modeling Of Yield Pillar Behavior Using Post-Failure Criteria
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Citation (Style = APA)
Chen, G. (1988). Computer Modeling Of Yield Pillar Behavior Using Post-Failure Criteria. Proceedings 7th International Conference on Ground Control in Mining (ICGCM) 7th
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SpreadSheed (CSV)
Chen, G. (1988). Computer Modeling Of Yield Pillar Behavior Using Post-Failure Criteria. Proceedings 7th International Conference on Ground Control in Mining (ICGCM) 7th
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 10
Publication Date:
Jan 1, 1988
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Abstract
Abstract
| In this paper, the plastic increment theory was applied in a 2-D finite element model, and a generalized Von Mises yielding criterion adopted to simulate the progressive failure of coal pillars. Extensive underground monitoring was conducted and the data compared with the computer model, yielding promising results. Three different longwall entry layouts, including a stable (s-s) pillar system, a yield-stable-yield (y-s-y) pillar system and a yield (y-y) pillar system, were investigated using the model developed. The yield-stable-yield system was considered to be the best of the designs studied in the case. A comprehensive parametric analysis was also performed. The triaxial factor and Poisson's ratio were found to be the most important material parameters affecting pillar yielding. |
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