| The occurrence of coal mine accidents not only caused the loss of property in our country,but also caused personal injury and death.One of the decisive factors for mine disasters is the quality of mine ventilation systems.Therefore,it is very important to evaluate the ventilation system of the mine.The timely evaluation of the mine ventilation system can find the problems existing in the ventilation of the mine,and then optimize and reform to avoid the mine accident.In order to find out the problems existing in mine ventilation system,this paper analyzes the mine ventilation system from four aspects:mine ventilation power and cost,reliability of ventilation system monitoring,mine climate and wind supply,mine ventilation disaster resistance The relevant indicators were analyzed and the mine ventilation system safety evaluation model was established.The weights of each index were calculated respectively by using Delphi-AHP and entropy weight method.Finally,the comprehensive weight was calculated according to the combination weight formula,The membership functions of each indicator of mine can be calculated separately for the corresponding membership degree,and then the judgment matrix made up of comprehensive weight and membership degree of each indicator can be calculated by fuzzy calculation layer by layer,and the final evaluation result can be obtained.Finally,The field application was made and the result of the evaluation was first class and reliable.This evaluation laid a good foundation for the reliable ventilation of Xinzhi Mine.Finally,the calculation shows that the fuzzy comprehensive evaluation method using Delphi-AHP and entropy method has some applicability and universality to mine ventilation evaluation. |
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