Abstract:
Coal and gas outburst is one of the most severe and hazardous safety incidents in coal mine production.To accurately predict the risk level of coal and gas outburst, this study, based on practical production conditions, summarizes 7 influential factors.The Analytic Hierarchy Process(AHP) is employed to determine the weight coefficients of these factors.Additionally, qualitative indicators among the influential factors are quantified using the fuzzy comprehensive evaluation method, establishing a prediction model based on the AHP-fuzzy comprehensive evaluation method.The results indicate that the ranking of factors influencing coal and gas outbursts, from most to least significant, is as follows: geological structure, gas pressure, ground stress, initial gas emission velocity, thickness of soft layered coal, coal strength coefficient, and mining depth.By quantifying qualitative indicators through fuzzy comprehensive evaluation, the predicted mine is classified as a high-risk mine for severe outbursts, demonstrating good consistency with actual conditions.