STUDY ON PREFERENCE SEQUENCING OF ECONOMIC RETURNS IN AN GIVEN PERIOD OF MINE

With respect to the feature that main techno economical index in a given period of mine is interval number, a preference sequencing model of multi property interval numbers for economic returns evaluation is built. The model introduces the exponential function of standardized index, defines the goodness and badness of evaluation plan by the help of goodness function of two interval numbers and carries out preference sequencing. The practice shows that the model is simple, practical and presents all round information for decision making.