An Advanced Fuzzy Comprehensive Assessment Model for Thermal Hazard in Colliery Based on Grey Theory and Variable Weights

摘要

An advanced fuzzy comprehensive assessment model based on grey theory and variable weights for thermal hazard of different exploitation and drivage workfaces was put forward according to the dynamic variety characteristics of influencing importance degree of all the air meteorologic parameters influencing thermal hazard. In this model, the diverse parameters were studied by adopting grey correlation analysis and fuzzy variable weight theory, and the membership fuctions for all the parameters were constructed by utilizing fuzzy statistic method. Moreover, the initial weight distribution was determined through grey correlation analysis. Afterwards, this paper carried out some validation calculations on the basis of the on-spot data in Dongtan Mine of Yanzhou Mining Group. The practice has testified that this model is a scientific and effective evaluation measurement for assessing thermal hazard in colliery.