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为探索细观参数的选取对散粒堆积体休止角的影响,采用PFC~(3D)颗粒流软件对筒仓卸料进行模拟研究.通过分别改变摩擦系数和摩阻系数的数值观察休止角的变化规律,利用曲线拟合程序测算堆积体休止角.结果表明:摩擦系数和摩阻系数的增大使得边坡休止角呈现变大的趋势,且当摩阻系数大于摩擦系数时,休止角的变化放缓.研究成果对于堆积体边坡数值模拟细观参数的取值具有一定的参考价值.
In order to explore the effect of the selection of mesoscopic parameters on the angle of repose of the particle accumulator, the unloading of silo was simulated by using PFC 3D particle flow software.The change of the angle of repose was observed by changing the coefficient of friction and the coefficient of friction respectively The results show that the angle of repose increases with the increase of friction coefficient and friction coefficient, and when the friction coefficient is greater than the friction coefficient, the angle of repose The change slowed down.Research results have some reference value for the value of numerical simulation of the slope of the pile body.