Preliminary Study on Bed-load Sediment Transport Rate in the Presence of Backwater Flow

JIN Zhong-wu; ZHANG Xiao-feng

doi:10.3969/j.issn.1001-5485.2014.02.001

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Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (2) : 1-7. DOI: 10.3969/j.issn.1001-5485.2014.02.001

RIVER LAKE SEDIMENTATION AND REGULATION

Preliminary Study on Bed-load Sediment Transport Rate in the Presence of Backwater Flow

JIN Zhong-wu¹,ZHANG Xiao-feng²

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Abstract

Hydrodynamic characteristics and bed load transport in backwater condition are not well comprehended yet. In particular, problems such as the sediment transport and fluvial process in natural backwater river or reservoir backwater area need to be explained theoretically. In this research, theoretical analysis, field observed data and flume experiment are carried out as follows firstly the differences of bed load transport in different conditions were analyzed, then the non-uniform flow structure in backwater condition was observed through flume experiment, and finally the bed load transport formula suitable for reservoir backwater condition was deduced based on data from field observation and flume experiment by regression analysis. Results reveal that when the backwater index β is beyond 1.3, traditional formulas are no longer suitable to calculate the bed load transport in backwater condition. The proposed bed load transport formula in backwater condition in consideration of bed stress and backwater index could be applied for researching the bed load transport in rivers of Three Gorges Reservoir area.

Key words

backwater condition / bed-load transport / flume experiment / sediment transport rate formula

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JIN Zhong-wu,ZHANG Xiao-feng. Preliminary Study on Bed-load Sediment Transport Rate in the Presence of Backwater Flow[J]. Journal of Changjiang River Scientific Research Institute. 2014, 31(2): 1-7 https://doi.org/10.3969/j.issn.1001-5485.2014.02.001

References

[1] HOAN N T. Stone Stability under Non-uniform Flow[D]. Delft: Delft University of Technology, 2011.
[2] 卢金友,金中武,郭炜,等. 长江上游推移质泥沙输移研究[J].长江科学院院报,2009,26(1):5-8.(LU Jin-you,JIN Zhong-wu, GUO Wei, et al. Study on Bed-load Sediment Transport in Upstream of Yangtze River[J].Journal of Yangtze River Scientific Research Institute,2009, 26(1):5-8. (in Chinese))
[3] AFZALIMHR H, DEY S, RASOULIANFAR P. Influence of Decelerating Flow on Incipient Motion of a Gravel-bed Stream[J]. Sadhana, 2007, 32(5): 545-559.
[4] KHORRAM S, ERGIL M. Pinpointing the Key Parameters in Estimating the Bed-load Sediment Flux in Reservoir Engineering[M]. Environment Earth Science, 2011, 66(7): 2109-2127.
[5] MEYER-PETER E, MULLER R. Formulas for Bedload Transport[C]∥IAHR. Proceedings of the 2nd Meeting of the International Association of Hydraulic Research, Stockholm, June 7, 1948:39-64.
[6] ENGELUND, F, HANSEN E. A Monograph on Sediment Transport in Alluvial Streams[M]. Denmark: Teknisk Vorlag, 1967.
[7] BAGNOLD R A. An Empirical Correlation of Bedload Transport Rates in Flumes and Natural Rivers[J]. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1980, 372(1751): 453-473.
[8] EINSTEIN H A. Formulae for the Transportation of Bed-load[J]. Transactions of ASCE, 1942,107:561-577.
[9] ACKERS P, WHITE W P. Sediment Transport: New Approach and Analysis[J]. Journal of Hydraulic Division of American Society of Civil Engineering, 1973,99(HY11):2041-2060.
[10]YALIN M S. An Expression for Bedload Transportation[J]. Journal of Hydraulic Division of American Society of Civil Engineering, 1963,89(HY3):221-250.
[11]YANG S Q, XU W L, YU G L. Velocity Distribution in a Gradually Accelerating Flow[J]. Advances in Water Resource, 2006, 29(12): 1969-1980.
[12]KIRONOTO B, GRAF W H. Turbulence Characteristics in Rough Non-uniform Open-channel Flow[J]. Proceedings of the ICE: Water Maritime and Energy, 1995, 112(4):316-348.
[13]申红彬. 顺直及微弯型河流水流阻力分析[D].武汉:武汉大学, 2011. (SHEN Hong-bin. Flow Resistance of Straight and Slightly Sinuous Rivers[D]. Wuhan: Wuhan University, 2011. (in Chinese))
[14]刘兴年,非均匀沙推移质输沙率及粗化稳定[D].成都:成都科技大学,1986. (LIU Xing-nian. Transport Rate and Coarsening Stability of Non-uniform Bedload[D]. Chengdu: Chengdu University of Science & Technology, 1986. (in Chinese))
[15]NNSDI F N, WILSON K. Motion of Contact-load Particles at High Shear Stress[J]. Journal of Hydraulic Engineering, 1992, 118(11): 1670-1684.
[16]黄才安,杨志达.泥沙输移与水流强度指标[J].水力学报,2003,(6):1-7. (HUANG Cai-an, YANG Zhi-da. Sediment Transport and Flow Intensity Indexes[J]. Journal of Hydraulic Engineering, 2003,(6):1-7. (in Chinese))
[17]金中武.壅水条件下推移质泥沙输移规律初步研究[D].武汉:武汉大学,2012. (JIN Zhong-wu. Preliminary Study on Bedload Transport under Backwater Flow [D]. Wuhan: Wuhan University, 2012. (in Chinese))