INFLUENCE OF WIDTH TO HEIGHT RATIO ON UNDERGROUND COAL PILLAR STRENGTH USING 2D NUMERICAL MODELLING ANALYSIS
The purpose of this study is to determine the influence of width to height ratio on coal pillar strength through a finite difference method numerical modelling. The coal pillar strength can be known from stress-strain curve. The pillars' widths range from 2.5 meters, 5 meters, 10 meters, and 15...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/75782 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The purpose of this study is to determine the influence of width to height ratio on coal pillar strength through a finite difference method numerical modelling. The coal pillar strength can be known from stress-strain curve. The pillars' widths range from 2.5 meters, 5 meters, 10 meters, and 15 meters, with a fixed height of 5 meters. The top pillar nodes pressed with a constant speed at 10-5 m/s causing a loading effect to the pillar. The result of this study showed that greater width to height ratio of the pillar will increase the pillar strength because of the confinement effect caused by the compression stress on the pillar core. |
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