A safety evaluation model of open-pit mine dust based on subjective and objective weighting method

By analyzing the dust safety of open-pit mines, five primary indicators and 20 secondary indicators are determined for evaluation, and the subjective weights determined by the hierarchical analysis method and the objective weights determined by the entropy weighting method are combined to determine the subjective and objective weights; the scores of experts are integrated using fuzzy numbers to determine the final scores, and the combination of the two is used to construct the evaluation model of the dust safety of open-pit mines. Taking three mines as an example, the results show that the open pit mine dust safety of Mine is A₁ significantly better than that of the remaining two mines. The study shows that the model is suitable for open pit mine dust safety evaluation, considering the typical characteristics of subjectivity and objectivity, better reflecting the intention of the decision makers and the actual importance of the indicators, and making the results more scientific and objective. The proposed method provides a reference for determining dust safety in open pit mines.