Fuzzy integrated evaluation for safety of metal mine ventilation system

According to the features of metal mine ventilation system, this paper chooses 13 indexes composing the safety evaluation index system of metal mine ventilation system. Membership functions are constructed by fuzzy mathematics, using this fuzzy words used to describe the safety state of the mine ventilation system can be transform into numerical type. Membership degree of index could be got when inserting measured date of mine ventilation in membership function. The weight of evaluating indexes could be got from the formula this paper given. And then using the comprehensive evaluation model this paper given we could get the evaluation result. The safety degree of mine ventilation system was graded by the assessment result. This provides decision-making basis for managers.