NUMERICAL MODELLING TO DETERMINE THE IMPACT OF WIDTH:HEIGHT PILLAR RATIO TO UNDERGROUND COAL PILLAR STRENGTH
One of the coal underground mining methods risks is roof and pillar possibility to collapse. Pillar is the natural support to maintain the stability of underground mining entry. One of the main factors that determine the coal pillar strength is the pillar dimension or width:height ratio (W/H ratio)....
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| 格式: | Final Project |
| 語言: | Indonesia |
| 在線閱讀: | https://digilib.itb.ac.id/gdl/view/57582 |
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