中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊
重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2013, Vol. 32 ›› Issue (5): 1014-1017.DOI: 10.3969 /j.issn.1674-0696.2013.05.25

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天然卵砾石的几何形状对起动流速的影响

江二中1，李洋2   

  1. 1. 广西壮族自治区交通规划勘察设计研究院，广西南宁530029; 2. 重庆市江河工程监理有限公司，重庆400074
  • 收稿日期:2012-05-23 修回日期:2012-09-15 出版日期:2013-10-15 发布日期:2014-10-27
  • 作者简介:江二中( 1982—) ，男，重庆石柱人，工程师，主要从事公路工程勘察设计方面的研究。E-mail: 43960656@ qq． com。

Influence of Natural Gravel Geometric Shape on Starting Velocity

Jiang Erzhong1，Li Yang2   

  1. 1. Guangxi Communications Planning，Survey ＆ Design Institute，Nanning 530029，Guangxi，China; 2. Chongqing Ｒiver Engineering Construction Supervision Co. Ltd. ，Chongqing 400074，China
  • Received:2012-05-23 Revised:2012-09-15 Online:2013-10-15 Published:2014-10-27

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摘要： 为更好研究山区河流泥沙运动的规律，在泥沙起动经典公式的基础上，提出了泥沙颗粒形状系数、泥沙颗粒饱满 度两种新的对泥沙颗粒起动产生影响的因素。并据此展开几何形状对起动影响情况的理论和试验分析，采用单因素 分析方法，将起动颗粒质量转换到近似相等的层面上，得出能够反映颗粒几何形状影响的起动功率和流速公式。

关键词: 泥沙起动, 几何形状, 天然卵砾石, 流速公式

Abstract: In order to have a better research on the movement law of sediment in mountainous rivers，two novel influence factors of sediment movement were proposed，which were particle shape parameters and particle saturation of sediment，on the basis of classic formulas of sediment incipient motion． According to this，the influence of geometric shapes on the incipient motion was analyzed theoretically and experimentally． The single factor analysis method was applied，which switched the start grain quality to approximately equal level． The starting power and velocity formula are obtained which can reflect the influence of geometric shape particles．

Key words: incipient motion, geometric shapes, natural gravel, velocity formula

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