Research of Coal Spontaneous Combustion Accident Based on Hierarchy Importance Causal Analysis Method

The paper proposed a hierarchy importance causal analysis method which combines causal analysis with analytic hierarchy process in allusion to a coal spontaneous combustion accident. The method not only analyzes factors of coal spontaneous combustion accident from qualitative aspect, but also gives importance of each factor from quantitative aspect, which has great significance for analyzing cause of mine accidents and proposing key improvements.