The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary

JIANG Guo-jun; YAO Yan-ming; TANG Zi-wen

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JIANG Guo-jun, YAO Yan-ming, TANG Zi-wen. The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary[J]. Haiyang Xuebao, 2002, 24(4): 51-57.

Citation:

JIANG Guo-jun, YAO Yan-ming, TANG Zi-wen. The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary[J]. Haiyang Xuebao, 2002, 24(4): 51-57.

JIANG Guo-jun, YAO Yan-ming, TANG Zi-wen. The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary[J]. Haiyang Xuebao, 2002, 24(4): 51-57.

Citation:

JIANG Guo-jun, YAO Yan-ming, TANG Zi-wen. The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary[J]. Haiyang Xuebao, 2002, 24(4): 51-57.

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The analysis for influencing factors of fine sediment flocculation in the Changjiang Estuary

Harbor Coast & Near Ocean Engineering Institute of Zhejiang University, Hangzhou 310028, China

Received Date: 2001-08-29
Rev Recd Date: 2001-12-03

Abstract

Abstract

Based on the test data under dynamic water and static water,main factors which influence the fine sediment flocculation are analyzed using the relative analysis theory of the gray model analysis.It is pointed out that the main influencing factors are water temperature,settling time,salinity,grain size,sediment concentration and current velocity according to relevant values.In those factors,the salinity and the sediment grain size are critical type influencing factors,but the settling time,the sediment concentration and the velocity are continuous influencing factors,and the water temperature has char acteristics of both the critical type and continuous type.When the critical values of the critical type influencing factors are reached or exceeded,the fine sediments are flocculated but the values do not influence the settling strength of the floc.The influence of the continuous type influencing factors is continuous.They not only influence the flocculation but also the settling strength of the floc.
- floc settling,
- influencing factors,
- critical type,
- continuous type,
- relative analyses

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References(16)

References

张志忠,王允菊,徐志刚长江口细颗粒泥沙絮凝若干特性探讨[A].第二次河流泥沙国际学术讨论会论文集[C].北京:水利电力出版社,1983 274-285

MANNING A J, DYER K R. A laboratory examination of floc characteristics with regard to turbulent shearing[J]. Marine Geology, 1999, 160(2): 147-170.

ELMALEH S. Flocculation energy requirement[J]. Water Research, 1991, 25(8): 939-943.

LI Gui-bai. Flocculation sediment of high-turbidity waters[J]. Water Research, 1991, 25(9): 1 137-1 143.

PARTHENIADES E. A fundamental framework for cohesive sediment dynamics[A]. MEHTA A. Lecture Notes on Coastal and Estuarine Studies 14, Estuarine Cohesive Sediment Dynamics[C]. Berlin, Heidelberg, New York, Tokyo: Springer,1984. 219-250.

PARTHENIADES E. Results of recent investigation on erosion and deposition of cohesive sediments[A]. SHEN H W.Sedimentation Symposium to Honor Professor Einstein H A[C]. Ft. Collins, CO. Chapter 12: 12.20-12.29.

MEHTA A J, PARTHENIADES E. An investigation of the depositional properties of flocculated fine sediment[J]. J Hydrol Res, 1975, 92 (C13): 361-381.

PARTHENIADES E. Erosion and deposition of cohesive soils[J]. ASCE, Journal of the Hydraulics Division, 1965, 91 (HY1): 105-139.

阮文杰.细颗粒泥沙动水絮凝的机理分析[J]海洋科学,1991,(5):46-49.

MATZ P A.Review oflaboratory sedimenttransport research usingfine sediments[A].第二次河流泥沙国际学术讨论会论文集[C]北京:水利电力出版社,1983 532-557

张志忠长江口细颗粒泥沙基本特性研究[A].全国泥沙基本理论研究学术讨论会论文集[C]北京:中国建材工业出版社,1992.369-375.

Van LEUSSEN W Aggregation of particles,settling velocity of mud flocs:a review.DRONKERS J,Van LEUSSEN,ed. Physical Processes in Estuaries[M]New York Springer-Verlag,1988.347-403

时钟长江口细颗粒泥沙过程[J].泥沙研究,2000,(6):72-81.

张志忠,阮文杰,蒋国俊.长江口动水絮凝沉降与拦门沙淤积的关系[J].海洋与湖沼,1995,26(6):632-638

邓聚龙灰色系统基本方法[M]武汉:华中理工大学出版社,1987.17-42.

沈承烈,阮文杰.长江口河床质冲淤特性的试验研究[J]泥沙研究,1986,(3):62-72.

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