Abstract: In order to effectively prevent all kinds of losses caused by high gas mine fire,the analytic hierarchy process (ahp) and prerisk analysis method were used to evaluate the risk of high gas mine fire.Firstly,the hierarchical structure model of gas accident risk analysis in highgas mine is constructed.Then the method of combining quantitative calculation and qualitative analysis is used to calculate the weight of all evaluation indexes of gas accident in highgas mine,and the relatively high weight evaluation indexes are obtained.Finally,the author puts forward specific corrective measures for each index by using the preliminary risk analysis method.According to the analysis results,it can be seen that the equipment factor is the highest priority index,which also puts forward the focus of work and specific preventive measures for highgas mine fire.

Key words: high gas Mine,gas accident risk,level analysis,prerisk analysis