A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ
A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ
A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ
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Surveying the related research in this field<br />
and take into account SD concept, 21 criteria<br />
were considered effective parameter and are<br />
listed in table 3.<br />
Table 3 consists of the first part of a<br />
questionnaire that some experts were asked<br />
to rank the importance level of each<br />
criterion.<br />
Table 3- Preference voting for criteria related to their importance levels and weights obtained<br />
at the first stage of HPVS<br />
Criteria<br />
0.54<br />
5<br />
Weights of importance levels<br />
0.27<br />
3<br />
Importance levels<br />
0.182 0<br />
Total score<br />
for each<br />
criterion<br />
Normalized<br />
weight for each<br />
criterion<br />
Very<br />
Importa<br />
Importa<br />
nt<br />
Not very<br />
Important<br />
Not<br />
Importa<br />
nt Vote of each criterion in each importance nt<br />
Production 4 1 level 0 0 2.453 0.080291971<br />
Geology 2 2 1 0 1.818 0.059507054<br />
Deposit Depth 3 2 0 0 2.181 0.071388825<br />
Haul Distance 3 2 0 0 2.181 0.071388825<br />
Mine Life 1 1 3 0 1.364 0.044646656<br />
Installation Time 0 3 2 0 1.183 0.038722137<br />
Capital Cost 2 3 0 0 1.909 0.06248568<br />
Power Costs 1 2 2 0 1.455 0.047625282<br />
Fuel Cost 0 3 2 0 1.183 0.038722137<br />
Labour Cost 1 3 1 0 1.546 0.050603908<br />
Maintenance Cost 1 3 1 0 1.546 0.050603908<br />
Reliability 0 2 3 0 1.092 0.035743511<br />
Ground Vibration 0 0 4 1 0.728 0.023829007<br />
Accident Probability 1 0 4 0 1.273 0.041668031<br />
No. of employment 0 0 5 0 0.91 0.029786259<br />
Climate 0 1 3 1 0.819 0.026807633<br />
Greenhouse Gas 1 2 1 1 1.273 0.041668031<br />
Dust Production 0 3 1 1 1.001 0.032764885<br />
Land Degradation 0 3 1 1 1.001 0.032764885<br />
Reclamation Requirement 1 1 2 1 1.182 0.038689405<br />
Flexibility 4 1 0 0 2.453 0.080291971<br />
It is clear that the votes in the last<br />
importance level (i.e. Not Important) should<br />
not influence the total score of each<br />
criterion.<br />
Therefore, the weight of this importance<br />
level is equal to zero and model (4) based on<br />
three importance levels was applied.<br />
The next step in this method is to<br />
calculate the score and normalized weight of<br />
each criterion according to previous section.<br />
In the last step, a preference voting among<br />
decision makers was conducted about the<br />
priorities of alternatives over each other with<br />
respect to each criterion. In addition, model<br />
(4) was applied to produce weights of<br />
ranking places. An example of this<br />
procedure for capital cost criterion can be<br />
found in Table 4.<br />
Table 4- Preference voting for alternatives<br />
with respect to "capital cost" criterion at the<br />
second stage of HPVS<br />
Alternatives<br />
Weight of Criterion<br />
0.062<br />
Weights of Ranking Places<br />
0.545 0.273 0.182 0<br />
Vote of each alternative in each<br />
Score<br />
136
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