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中文摘要：
为了研究不同粒度和堆载形态下散体边坡瞬时自然安息角,设计了一套实验方案,将3种粒径的散体物料分别堆载成平直、凹形、凸形3种几何结构的散体边坡,测得不同状态下的自然安息角。实验结果表明：随着物料粒度的增大,散体边坡自然安息角呈现出增加的趋势;散体自然堆载其坡面角度连续变化而并非均匀线性边坡,平直边坡和凸形边坡的自然安息角下部较大、上部较小,凹形边坡反之;散体颗粒的几何尺寸对于散体边坡自然安息角有较大的影响,颗粒圆滑的物料堆载形成的散体边坡自然安息角较为均匀,边坡顶面承压能力较小;棱面分明的颗粒堆载成的散体边坡自然安息角度取决于颗粒基础面的面积大小,且坡顶面承压能力较大。
英文摘要：
In order to study the instantaneous natural repose angle of granular slopes with different granularities and loading shapes,a viable experimental program is designed to measure the natural repose angles under various conditions,which are straight slope,concave slope and convex slope made of three different granular materials. The results show that,the natural repose angle of granular slope presents a increasing trend with the growth of particle size; the granular slope is naturally piled,the slope angle of which changes continuously rather than shows a uniform linear relationship,and the natural repose angle of straight slope and convex slope is large in the bottom but small in the top,which is contrary to the one of concave slope; the geometrical sizes of scattered particles apply a significant influence on the natural repose angle of slope,that is,the natural repose angle of slopes which are formed by smooth particles is more relatively even,and the pressure-bearing capacity is small; the natural repose angle of the slopes which are formed of unsmooth particles depend on the dimensions of the particles,and the pressure-bearing capacity is relatively great.
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