为了揭示煤与瓦斯突出气-固颗粒抛出流演化规律，基于离散元数值模拟方法，提出了现场统计数据与数值模拟相结合的方法；研究了煤与瓦斯突出气-固颗粒两相流的发展过程，揭示了喷出的煤颗粒及瓦斯的运动轨迹变化规律；基于主成分分析法（PCA）和模糊综合评价法（FCE），实现了对27处突出矿井危险性的分级。结果表明：煤与瓦斯突出分成4个阶段，煤与瓦斯突破石门阶段，煤与瓦斯混合冲击阶段，煤与瓦斯突出两相流分流阶段和煤与瓦斯突出衰减阶段；随着突出的发展，煤与瓦斯突出两相流发生分流；瓦斯运动速度较高，主要在巷道上方运动，多数煤颗粒则沉降至巷道底端，前方少部分煤颗粒在瓦斯裹挟下继续向前移动，运动轨迹比瓦斯更为复杂；通过数值模拟得到3处突出矿井煤颗粒抛出量分别为121.5 、42.7 、320.32 t；经PCA-FCE综合评价，27处煤与瓦斯突出矿井包括一般突出矿井16个，严重突出矿井11个。

In order to reveal the evolution law of coal and gas outburst gas-solid particle flow, an analysis method combining field statistical data with numerical simulation data was proposed based on the discrete element numerical simulation method. The development process of gas-solid two-phase flow of coal and gas outburst was studied, and the movement track of coal and gas was revealed. Based on principal component analysis (PCA) and fuzzy comprehensive evaluation (FCE), 27 outburst mines were classified. The research results show that coal and gas outburst can be divided into four stages: coal and gas breaking through crosscut stage, coal and gas mixed impact stage, coal and gas two-phase flow diversion stage and coal and gas outburst attenuation stage; with the development of the outburst, the two-phase flow of coal and gas is divided. Compared with coal particles, the gas movement speed is higher, mainly above the roadway, most coal particles settle to the bottom of the roadway, and a small number of coal particles and gas continue to move forward in coordination, the coal particle movement tracks are more complex than gas; through numerical simulation, the coal throw volume of three outburst mines are 121.5 t, 42.7 t and 320.32 t; according to PCA-FCE comprehensive evaluation, 27 coal and gas outburst mines include 16 general outburst mines and 11 serious outburst mines.