用事故树分析法确定煤矿瓦斯突出的主导因素探讨

在综合分析影响瓦斯突出多项因素的基础上,结合煤矿瓦斯地质情况,创建了瓦斯突出事故树的一般模型;在参考青龙煤矿的瓦斯地质情况下建立了相应的矿井瓦斯突出事故树事件函数;通过最小割集的基本事件求取重要度系数,最终确定了控制瓦斯突出的主导因素。该方法的成功应用可为瓦斯地质单元的划分和瓦斯突出的区域预测提供定量化依据。

Discussion on Applying Fault Tree Analysis Method to Determine Dominant Factors of Gas outburstin Coal Mine

A general fault tree model of gas outburst was established on the synthetic analysis basis of several factors affecting gas outburst and in the light of the gas geological conditions of a coal mine; the event function of a corresponding mine gas outburst fault tree was also established with the reference to the gas geological condition of Qinglong Mine; the importance factor was obtained through the detailed divided of a basic event; and the dominate factors for controlling gas outburst was finally determined. The successful application of this method can provide quantitative basis for the division of gas geological unit and the regional prediction of gas outburst.