#TITLE_ALTERNATIVE#
ABSTRACT: <br /> <br /> <br /> <br /> <br /> According to mines practices and scientist, empirical method such as RMR and Q is very conservative if being used directly in mine tunnels design, this is because the origin of historical databases derived the system was...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/6265 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | ABSTRACT: <br />
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According to mines practices and scientist, empirical method such as RMR and Q is very conservative if being used directly in mine tunnels design, this is because the origin of historical databases derived the system was came from civil enginee ring tunnels constructed as isolated single tunnel, has very long life span, very high traffic, and very high safety factor. On the other hand, mine tunnels constructed as multiple paralel openings, needed ini mines lifetime, the traffic is not as high as civil engineering tunnels, and has specific safety factor. So, these was the reason empirical method has been modified according to type of the construction, like CMRR (Coal Mine Roof Rating) for coal mines, MRMR Modified Rock Mass Rating) for caving mines, slope stability by Romana, 1995, etc. |
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