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| APPLICATION OF GREY MULTIOBJECTIVE DECISION-MAKING IN OPTIMIZATION OF MINING SCALE FROM SURFACE INTO UNDERGROUND |
| Received:March 30, 2007 |
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| DOI： |
| KeyWord:from surface into underground; mining scale; optimization; grey system theory |
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WANG Wen-jie1,LU Hong-jian2 (1.Beijing General Research Institute of Mining , Metallurgy,Beijing 100044,China,2.Beijing University of Science , Technology,Beijng 100083,China)
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| Abstract: |
| Using the way of grey decision-making, the paper takes all kinds of factors into account in choosing the evaluation factors, involving of the new fixed investment, net present value, total cost. Combined with mine own characteristics, the numbers of service years and obtain employment are placed on evaluation indexes. It is not only considered the economic benefits of mine, but also has enough attention for social problems. In order to overcome the disadvantages of static index and enhance the scientific nature of scale-optimization, the paper chooses the dynamic index as evaluation factors, for instance the net present value. |
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