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) ›› 2016, Vol. 35 ›› Issue (6): 68-72.DOI: 10.3969/j.issn.16740696.2016.06.14

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

三峡水库细颗粒泥沙起动流速研究

李文杰1,赵畅1,杨胜发1,王涛2   

  1. (1. 重庆交通大学 国家内河航道整治工程技术研究中心,重庆 400074;2. 长江重庆航运工程勘察设计院,重庆 401147)
  • 收稿日期:2015-09-25 修回日期:2016-04-20 出版日期:2016-12-25 发布日期:2016-12-29
  • 作者简介:李文杰(1984—),男,河北秦皇岛人,副教授,博士,主要从事泥沙运动力学、流域水沙过程模拟及航道整治方面的研究。Email:li_wj1984@163.com。
  • 基金资助:
    国家自然科学基金项目(51209241);国家科技支撑计划项目(2012BAB05B03);交通运输部应用基础研究项目(2014329814310)

Research on Incipient Velocity of Fine Sediment in Three Gorges Reservoir

LI Wenjie1,ZHAO Chang1,YANG Shengfa1,WANG Tao2   

  1. (1. National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074, P.R.China; 2. Changjiang Chongqing Harbour and Waterway Engineering Investigation and Design Institute, Chongqing 401147, P.R.China)
  • Received:2015-09-25 Revised:2016-04-20 Online:2016-12-25 Published:2016-12-29
  • Contact: 赵畅(1990—),女,黑龙江哈尔滨人,硕士研究生,主要从事泥沙运动力学、流域水沙过程模拟及航道整治方面的研究。Email:317425901@qq.com。

摘要: 三峡水库运行后,中值粒径为0.01 mm的细颗粒泥沙大量落淤,对大细颗粒泥沙起动流速的研究是解决三峡水库泥沙淤积问题的基础。利用搜集的室内试验资料验证了现有的典型起动流速公式,结果表明细颗粒泥沙的起动受水深和干容重的影响,而现有公式精度不高。根据泥沙颗粒受力原理建立了新的起动流速公式,综合大量实测资料和已有研究成果拟合公式参数,新公式的计算值与实测值符合较好,相对误差较低。

关键词: 航道工程, 起动流速, 细颗粒泥沙, 三峡水库

Abstract: Since Three Gorges Reservoir operated, there have been a large amount of fine sediment deposition with 0.01 mm medium size. The basis to address this issue lies on the study on the fine sediment incipient velocity. The existing representative incipient velocity formula was verified with the collected lab experiment data, and the result turned out that the incipience of fine sand was influenced by water depth and dry bulk density, in addition that the accuracy of existing formula was insufficient. The new incipient velocity formula was established based on the stress principle of sediment particle, and the fitted parameters were obtained by using large amount of measured data and previous works. It turns out that the calculated values of the new formula are in good agreement with the measured values, namely, it has a relative low error ratio.

Key words: waterway engineering, incipient velocity, fine sediment, Three Gorges Reservoir

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