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为探究不同粒径及级配对碎石料休止角的影响,通过散粒体边坡堆积试验中改进的碎石料休止角测量方法,对不同粒径及级配碎石料休止角进行测量,并结合试验堆积现象进行观察分析。结果表明:随均质粒径碎石料粒径的增大,休止角逐渐增大;随不均匀系数的增加,平均粒径对休止角的影响逐渐变小;不均匀系数对休止角的影响呈先增大后趋于稳定;颗粒级配分布愈不均匀,散粒体边坡休止角越大。
In order to explore the influence of different particle size and gradation on the angle of repose of aggregate, the angle of repose angle of different size and gradation of crushed stone was measured by the improved method of measuring the angle of repose of aggregate in the bulk sediment test. Combined with the phenomenon of experimental accumulation observed and analyzed. The results show that the angle of repose increases with the increase of the particle size of the homogeneous particle size aggregate. The influence of the average particle size on the angle of repose decreases with the increase of the coefficient of heterogeneity. The influence of the nonuniformity coefficient on the angle of repose It shows the first increase and then tends to be stable. The more uneven the particle size distribution, the larger the angle of repose of the granular material slope.