Safety evaluation model of coal mine based on principal component and cluster analysis

Firstly, an evaluation index system of coal mine safety was established from five aspects including people's behavior, safety management, equipment facilities, natural conditions and safety technology and supervision mechanism. Secondly, a safety evaluation model of coal mine was established based on principal component analysis and cluster analysis. Principal component analysis is used to choose comprehensive indexes, so as to reduce the number of evaluation indexes. Cluster analysis is used to classify and evaluate safety status of each coal mine enterprise, so as to analyze similarities and differences. Finally, safety status of 40 coal mine enterprises in a province was evaluated, and application steps of the model were introduced. The application result shows that evaluation result concluded by the model can reflect safety status of coal mine simply and intuitively.