单向流作用下淤泥质黏土起动试验研究

杨兵; 蔡瑞卿; 唐驰; 马建林; 呼和敖德

doi:10.3969/j.issn.0258-2724.2012.04.008

单向流作用下淤泥质黏土起动试验研究

doi: 10.3969/j.issn.0258-2724.2012.04.008

基金项目:

国家自然科学基金资助项目(10902112)

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- 文章访问数: 971
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出版历程
- 收稿日期: 2011-10-20
- 刊出日期: 2012-08-25

Experimental Research on Onset of Muddy Clay Exposed to Unidirectional Flow

摘要

摘要: 为掌握淤泥质黏土的起动规律,采用水体灰度和水流速度同步测量的方法,对不同沉积密度条件下淤泥质黏土的起动特性进行了试验研究.试验结果表明:淤泥质黏土的起动现象可用弱起动和普遍起动描述.弱起动床面冲刷率低,水体灰度值的变化约为10;普遍起动床面冲刷率明显提高,灰度曲线发生突变的附近为普遍起动,相应的灰度值变化一般超过20.普遍起动流速约为弱起动流速的1.5倍.
- 淤泥质黏土 /
- 临界起动流速 /
- 灰度 /
- 单向流
Abstract: In order to investigate the onset law of muddy clay, the onset characteristics of muddy clay with different sedimentary densities were investigated experimentally by the synchronous measurement of water grey level and flow velocity. The experimental results show that the phenomenon of the onset of muddy clay can be divided into weak onset and general onset. To the weak onset, the rate of erosion on the muddy bed is low and the variation of water grey level is about 10. While to the general onset, the rate of erosion corresponding to a sudden change in the curve of water grey level increases evidently and the variation of water grey level is usually more than 20. The flow velocity of the general onset is 1.5 times as much as that of the weak onset.
- muddy clay /
- critical flow velocity of onset /
- grey level /
- unidirectional flow

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参考文献(20)

钱宁,万兆惠. 泥沙运动力学[M]. 北京:科学出版社,1983: 420-425.

张瑞瑾,谢鉴衡,王明甫,等. 河流泥沙动力学[M]. 北京:水利电力出版社,1989: 109-114.

唐存本. 泥沙起动规律[J]. 水利学报,1963(2): 1-12.

沙玉清. 泥沙运动学引论[M]. 北京:中国工业出版社,1965: 302-310.

窦国仁. 论泥沙起动流速[J]. 水利学报,1960(4): 44-60.

SMERDON E T, BEASLEY R P. Tractive force theory applied to stability of open channels in cohesive soils. Columbia, Missouri: University of Missouri, 1959: 60-68.

曹叔尤,杜国翰. 黏性土充淤的试验研究[J]. 泥沙研究,1986(4): 73-82.

徐伦. 水库黏性淤积体溯源冲刷试验研究//中国水利水电科学研究院科学研究论文集:第33集. 北京:水利电力出版社,1990: 121-130.

黄岁梁,陈稚聪,府仁寿. 黏性类土的起动模式研究[J]. 水动力学研究与进展:A辑,1997,12(1): 1-7. HUANG Suiliang, CHEN Zhicong, FU Renshou. Study on starting model of clay of all types[J]. Journal of Hydrodynamics: Series A, 1997, 12(1): 1-7.

杨美卿,王桂玲. 黏性细泥沙的临界起动公式[J]. 应用基础与工程科学学报,1995,3(1): 99-109. YANG Meiqing, WANG Guiling. The incipient motion formulas for cohesive fine sediments[J]. Journal of Basic Science and Engineering, 1995, 3(1): 99-109.

韩其为,何明民. 泥沙起动规律及起动流速[M]. 北京:科学出版社,1999: 200-212.

张兰丁. 黏性泥沙起动流速的探讨[J]. 水动力学研究与进展:A辑,2000,15(1): 82-88. ZHANG Landing. Study on starting velocity of cohesive sediment[J]. Journal of Hydrodynamics: Series A, 2000, 15(1): 82-88.

JOCHEN A, VLADIMIR N, ROY W. Effects of bed material properties on cohesive sediment erosion[J]. Marine Geology, 2004, 207: 83-93.

TAN G M, WANG J, SHU C W, et al. Effects of consolidation time and particle size on scour rates of cohesive sediment[J]. Journal of Hydrodynamics: Series B, 2007, 19(2): 160-164.

RAMBABU M, RAO S N, SUNDAR V. Current-induced scour around a vertical pile in cohesive soil[J]. Ocean Engineering, 2003, 30: 893-920.

GANAOUI O E, SCHAAFF E, BOYER P, et al. The deposition and erosion of cohesive sediments determined by a multi-class model[J]. Estuarine, Coastal and Shelf Science, 2004, 60: 457-475.

肖辉,曹祖德,赵群,等. 波、流作用下粘性淤泥的起动试验研究[J]. 泥沙研究,2009(3): 75-80. XIAO Hui, CAO Zude, ZHAO Qun, et al. Experimental study on incipient motion of coherent silt under wave and flow action[J]. Journal of Sediment Research, 2009(3): 75-80.

KNAPEN A, POESEN J, GOVERS G, et al. Resistance of soils to concentrated flow erosion: a review[J]. Earth-Science Reviews, 2007, 80: 75-109.

洪柔嘉,应水良. 水流作用下的浮泥起动流速试验研究[J]. 水利学报,1988(8): 49-55.

蒋昌波,白玉川,姜乃申,等. 海河口粘性淤泥起动规律研究[J]. 水利学报,2001(6): 51-56. JIANG Changbo, BAI Yuchuan, JIANG Naishen, et al. Incipient motion of cohesive silt in the Haihe River estuary[J]. Journal of Hydraulic Engineering, 2001(6): 51-56.

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文章访问数: 971
HTML全文浏览量: 60
PDF下载量: 272
被引次数: 0

单向流作用下淤泥质黏土起动试验研究

doi: 10.3969/j.issn.0258-2724.2012.04.008

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Experimental Research on Onset of Muddy Clay Exposed to Unidirectional Flow

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