Abstract:

In order to improve the safety production level of coal mining enterprises and ensure a reasonable proportion of safety investment, the CPT method was introduced to establish a dynamic safety investment decision-making model that combined the criteria importance through intercriteria correlation(CRITIC) method improved by the coefficient of variation method and CPT. From the perspective of safety input and output, an evaluation index system was constructed, and the weights of each index were calculated by the improved CRITIC method. Combined with the CPT, the static decision-making ranking results of various safety investment schemes in coal mining enterprises were calculated, and on this basis, the results were dynamically optimized to obtain the final dynamic decision-making ranking results of safety investment. The study shows that the constructed model is reasonable and reliable with high sensitivity compared with VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method. The model considers the influence of the decision maker's subjective risk preference on the actual decision-making results, and the time factor can reflect the dynamic accumulation level during the research period, so the decision-making results are more scientific and reasonable.

Key words: cumulative prospect theory (CPT), safety investment, dynamic decision-making, index system, coal mining enterprises