Safety risk evaluation of coal mine based on average weighted combination weight

Abstract

In order to comprehensively, accurately and quantitatively evaluate coal mine safety conditions, various factors affecting mine safety production have been comprehensively considered from the four aspects of man, machine, environment, and management, and a coal mine safety risk evaluation index system has been constructed. Using the analytic hierarchy process, entropy method, and coefficient of variation method to determine the index weights, and using the weighted average method to obtain the combined weights of the index system, fully integrate the weight information of the above three weighting methods, and avoid the influence of subjective scoring by experts. The coal mine risk value is calculated by the fuzzy comprehensive evaluation method, and the safety status is divided into 4 grades in the "Coal Mine Safety Regulations", and the mine risk grade of 2# and 3# coal mines is evaluated to be at level IV (unsafe), 1#, 4 #The coal mine risk level is at level III (less safe).