ANALYSIS OF RAINFALL DATA FOR CALCULATION OF VOID FILLING TIME AT BATU HIJAU, WEST NUSA TENGGARA
Based on the mine planning BH2014BPv2, it is estimated that an opening hole will be formed that can accommodate approximately 807,773,048 m3 of water with a height of overflow is 260 mRL. The ability of void to accommodate water and their role in water management makes void one of the important f...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/61893 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Based on the mine planning BH2014BPv2, it is estimated that an opening hole will be formed
that can accommodate approximately 807,773,048 m3 of water with a height of overflow is
260 mRL. The ability of void to accommodate water and their role in water management
makes void one of the important focuses in post-mining planning. Therefore, it is necessary
to know the prediction of the time of filling void in order to formulate the right strategy
during post-mining activities. In this study, the calculation of the length of time for filling
void after mining activities is completed in 2027 will be carried out until it reaches the runoff
point at an altitude of 260 mRL with several scenarios based on rainfall data and
evaporation data around the mining area. The data used in this study are secondary data
derived from similar previous studies. Data in the form of monthly rainfall analyzed the
characteristic of rainfall and rainfall patterns. Furthermore, the rainfall data will be carried
out in a Monte Carlo simulation to be used as a calculation of the duration of filling the
void. There are 3 results of filling scenarios which result in the length of time for ranging
from 27,9-29.16 years after mining activities end. |
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