A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ

23 rd
Figure 4. UPL of the sample block model in Figure 1
amount of Economic, Social, Environmental,
and total scores for each pit.
Figure 5. Description of intermediate pits
Table 2 provides the amount of indicators
for each pit. using equation 1 and 2 one
could calculate the amount of indicators for
each case.
Then, the decision maker must provide the
weight of importance of each indicator. This
is a case dependent process and it also
depend on the decision makers priorities.
Using equation 3, one could determine the
final score of the pits. Figure 6 shows the
Figure 6. Final score of the pits
Considering the final scores, it is obvious
that UPL5 is the one with highest score,
therefore UPL5 is selected as the final pit
(figure 7). UPL5 is between the pit with the
highest profit and the pit with the highest ore
content.
Table 2. Amount of indicators for each pit
pit
UPL1 UPL2 UPL3 UPL4 UPL5 UPL6 UPL7 UPL8 UPL9
1 Reclamation cost 1 0.73 0.55 0.50 0.36 0.32 0.18 0.14 0.00
2 Land use 0.00 0.20 0.40 0.50 0.60 0.70 0.80 0.90 1.00
3 Stripping ratio (w/o) 1 0.78 0.44 0.44 0.41 0.25 0.21 0.05 0.00
4 Specific energy used 1 0.25 0.49 0.33 0.18 0.20 0.20 0.02 0.00
5 Mine life (year) 0 0.16 0.33 0.42 0.53 0.63 0.75 0.87 1.00
6 Safety 1 0.67 0.50 0.50 0.33 0.33 0.17 0.17 0.00
7 Resource efficiency 0 0.20 0.33 0.47 0.60 0.67 0.80 0.87 1.00
8 Ore content 0 0.20 0.33 0.47 0.60 0.67 0.80 0.87 1.00
9 Profit 1 0.932 0.887 0.858 0.756 0.577 0.397 0.134 0
10 ore unit value 1 0.697 0.567 0.479 0.374 0.271 0.168 0.055 0
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