Abstract
The improved grey correlative model was put forward in order to improve the objectivity of grey synthetic evaluation method. Balanced degree was ascertained by entropy theory. Weighted grey correlative degree was synthesized by grey correlative coefficient and entropy weights. Balanced adjacent degree, which was derived from weighted grey correlative degree and balanced degree, was taken as the evaluation criteria in the improved model. Therefore, grey synthetic evaluation result is more reasonable. The model has been applied in the risk assessment on mine ventilation systems in the 4th, 5th and 6th mines Pingdingshan Coal Group Corporation Ltd. The order preference of ventilation systems was attained. At the same time, the problems existing in mine ventilation systems were pointed out, and the corresponding countermeasures were put forward. The evaluation results indicate that the improved method be more reasonable and objective than general grey correlative method.
Published Version
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