Research On Fuzzy Reliability Of Mineventilation Network

The methods of conventional reliability in the study of large ventilation networkreliability problems requires a lot of samples and the use of methods of mathematicalstatistics, which leads to consume a large amount of manpower and material resources,itis not conducive to the use of the actual production of the mine.There are a lot of uncertainty and fuzzy variables in the ventilation circuit; the wayto conventional reliability to solve this kind of problem is incapable of action. While theuse of fuzzy reliability theory can study the ventilation air duct fuzzy reliability index inthe less sample space, combined with experts of mines and technical personnelexperience that will be more convenient for ventilation system reliability research.This paper first introduces the fuzzy set extension theory and interval mathematicaltheory, the use of ventilation system of fuzzy reliability and failure rate of ventilationnetwork, will be used in the hybrid model analysis. This series of studies was mineventilation network fuzzy reliability analysis of theoretical basis.By extending this principle and triangular fuzzy numbers identified a relativelysimple and practical reliability of mine ventilation air duct fuzzy membership function, itis used to calculate the fuzzy reliability duct. The Further series model is used to establishthe ventilation network reliability model,then use two specific examples validate themodel.This paper introduces the method to determine the linear fuzzy numbers with thedoor or gate operator and fuzzy fuzzy operator, then use the Fussell-Vesely value tocalculate equilibrium titration degree of importance of air duct,thereby establishing aventilation network fuzzy fault tree model. Through specific examples, ventilation fuzzyfault tree model to calculating. Got fault tree basic event failure data and critical analysisresults, which verifies the fuzzy fault tree model.This article has done a simple study on fuzzy reliability of mine ventilation and theindex of loss of efficiency, and gives examples of practical application. This studyprovides us a referential method which can be used to solve the reliability problem ofventilation system.