HIGHWALL SLOPE STABILITY ANALYSIS USING LIMIT EQUILIBRIUM METHOD IN PIT A PT XYZ
PT XYZ is one of the coal mining companies in East Kalimantan Province which is conducting mining operations in Pit A. In this final project research, the stability analysis of PT XYZ's Pit A highwall slopes was carried out using the limit equilibrium method. Analysis of the stability of the...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/76545 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | PT XYZ is one of the coal mining companies in East Kalimantan Province which
is conducting mining operations in Pit A. In this final project research, the stability
analysis of PT XYZ's Pit A highwall slopes was carried out using the limit
equilibrium method. Analysis of the stability of the highwall slope was carried out
by considering the vibration factor due to blasting of 0.03g and 0.05g and the
condition of the groundwater table with hu = 1, hu = 0.8, and hu = 0.6. Referring to
the provisions of the Minister of Energy and Mineral Resources Decree No.
1827/K/30/MEM/2018, the minimum permissible dynamic factor of safety (FK)
value is 1.1. From the analysis of the existing highwall slope model, it was found
that the FK value was still less than 1.1 for conditions hu = 1 and hu = 0.8 which
indicated that the slope was in an unsafe condition. Furthermore, a recommendation
is given to resloping the highwall slope with the amount of slope adjusting for each
existing condition until a dynamic safety factor of more than 1.1 is obtained. |
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