[1]万兆惠,华景生.粗细颗粒同时存在时的流动阻力[J].山地学报,1991,(03):153.
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粗细颗粒同时存在时的流动阻力()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
1991年03期
页码:
153
栏目:
山地学报
出版日期:
1991-10-01

文章信息/Info

作者:
万兆惠;华景生
水利部水利水电科学研究院泥沙研究所 ;水利部水利水电科学研究院泥沙研究所
关键词:
泥石流; 阻力; 离散力; 粘性力; 絮网结构
文献标志码:
A
摘要:
为了研究同时存在粗细颗粒的流动阻力,进行了一组专门设计的试验。分析试验资料结果表明:由细的粘土颗粒引起的粘性力与由粗颗粒引起的离散力是可以线性叠加的。离散力是由于粗颗粒相互之间的碰撞,以及粗颗粒与边壁之间的碰撞所造成的。而粘土颗粒的絮凝作用形成絮团和絮网结构,它们对粗颗粒之间的碰撞起到缓冲作用。因而当有细的粘土颗粒存在时,离散力大幅度降低。

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更新日期/Last Update: 1991-10-01