颗粒形状和介质对泥沙休止角的影响
发布时间：2019-05-15 05:29
【摘要】：泥沙休止角的影响因素主要包括形状、粒径、重率、介质、颗粒级配等,现有的研究主要侧重于粒径、重率、颗粒级配等因素,对于形状和介质对泥沙休止角的影响的研究较少且存在不足。采用筛分法,将天然沙石分为5个不同的粒径组,并将10~15 mm、15~20 mm两个较大粒径组的沙石分为圆球、扁平、椭球3种不同的形状,然后利用自制的抽板泥沙休止角测量仪器测量了泥沙在空气中和水中的休止角。结果表明,粗沙在空气中的休止角大于在水中的休止角,而细沙在水中的休止角大于在空气中的休止角;对于同一粒径组,椭球形的泥沙休止角最大,扁平形次之,圆球形最小。
[Abstract]:The influencing factors of sediment rest angle mainly include shape, particle size, weight rate, medium, particle gradation and so on. The existing research mainly focuses on particle size, weight rate, particle size distribution and so on. There are few and insufficient studies on the influence of shape and medium on sediment rest angle. The natural sand and stone were divided into five different particle size groups by screening method, and the sand and stone of 10 鈮，
本文编号：2477346
[Abstract]:The influencing factors of sediment rest angle mainly include shape, particle size, weight rate, medium, particle gradation and so on. The existing research mainly focuses on particle size, weight rate, particle size distribution and so on. There are few and insufficient studies on the influence of shape and medium on sediment rest angle. The natural sand and stone were divided into five different particle size groups by screening method, and the sand and stone of 10 鈮，
本文编号：2477346
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