CW-FCEM Evaluation Model of Rock Burst in Coal Mine Based on Group Decision Analytic Hierarchy Process and Factor Analysis

The evaluation accuracy of rock burst in coal mine is low, mainly because it is difficult to determine the reasonable evaluation index weight. To solve this problem, the evaluation index combination weighting method is proposed. Firstly, the subjective weight of the index is determined by the analytic hierarchy process of group decision-making, and then the objective weight of the index is determined by the factor analysis method. Finally, through the multiplication normalization formula, the subjective weight and objective weight are combined to get a reasonable index weight, which effectively eliminates the artificial influence when subjective weight is given, and avoids the problem of too absolute when objective weight is given. The combination weight is introduced into the fuzzy comprehensive evaluation method to evaluate the danger of rock burst in a coal mine, and the evaluation result is “safer”, which accords with the engineering practice. The results show that the CW-FCEM coupling evaluation model based on AHP and factor analysis is accurate and accurate.