Imbalanced Flow and Sediment Diversion Ratio in Fujiangsha Reach underthe Combined Action of Tide and Runoff

LIU Gao-feng

doi:10.11988/ckyyb.20221431

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Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (2) : 192-198. DOI: 10.11988/ckyyb.20221431

FORUM OF CHANGJIANG RIVER PROTECTION AND INNOVATIVE DEVELOPMENT, THE 2022ANNUAL ACADEMIC MEETING OF CHANGJIANG TECHNOLOGY AND ECONOMIC SOCIETY

Imbalanced Flow and Sediment Diversion Ratio in Fujiangsha Reach underthe Combined Action of Tide and Runoff

LIU Gao-feng

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Abstract

In the study of branching rivers, flow and sediment diversion ratio is an important factor. The flow and sediment diversion ratio at Fujiangsha river reach in the Yangtze River Estuary was calculated according to in-situ data from 2012 to 2019 by using a 3D tidal-sediment numerical model ECOM-Sed. Result demonstrate that runoff increase in the upstream or tidal range decrease in the downstream would both intensify the imbalance between flow and sediment diversion. The factor of such imbalance is positively correlated with the amount of dredging maintainance of navigation channel. It’s difficult for the 30% discharge in Fubei channel to convey about 40% sediment flux. Such impbalance would result in severe silting in Fubei navigation channel. To alleviate the silting, engineering measures such as lengthening or heightening of the three existing groins at Fujiangsha reach can be taken to reduce the imbalance.

Key words

Yangtze River estuary / Fujiangsha river reach / Fubei channel / diversion ratio between flow and sediment / imbalance

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LIU Gao-feng. Imbalanced Flow and Sediment Diversion Ratio in Fujiangsha Reach underthe Combined Action of Tide and Runoff[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(2): 192-198 https://doi.org/10.11988/ckyyb.20221431

References

[1] 曹民雄,夏云峰,马启南.长江福姜沙水道河床演变分析[J].人民长江,2000, 31(12): 23-27.
[2] 付桂.长江南京以下12.5 m深水航道治理工程福姜沙水道整治工程效果对比分析[J].水运工程,2021 (1): 104-110.
[3] 刘高峰,王统泽.福姜沙河段输沙、边滩输移特征和动力机制研究[J].水运工程,2020(11): 94-99.
[4] 张世钊,夏云峰,徐华,等. 长江福姜沙水道深水航道整治工程分流分沙影响试验研究[C] //中国海洋工程学会.第十八届中国海洋岸工程学术讨论会论文集.北京:海洋出版社,2017: 1373-1377.
[5] 黄卫东, 刘同宦, 栾华龙.水沙条件变化下长江下游典型江心洲汊道形态演变及趋势[J].长江科学院院报,2018, 35 (11): 7-12.
[6] 胡向阳, 潘庆燊.长江中下游分汊河段的整治[J].长江科学院院报,2005, 22 (3): 13-17.
[7] 余新明. 河道冲淤情况下分流分沙模式初步研究[D]. 武汉:武汉大学,2004: 61.
[8] 李琳琳,余锡平.分汊河道分沙的三维数值模型[J].清华大学学报(自然科学版),2009,49(9):1492-1497.
[9] 刘传杰,李保,李昌生,等.2001—2017年长江口南北港水文要素变化分析[J].水利水电快报,2022, 43(4):27-30,37.
[10] 谢鉴衡. 河床演变及整治[M].北京:中国水利水电出版社,1997.
[11] 长江水利委员会水文局长江口水文水资源勘测局. 2022年洪季长江口水域主要汊道分流分沙比测验成果报告[R].上海:长江水利委员会水文局长江口水文水资源勘测局,2022.
[12] 韦立新, 曹双, 张涛涛,等.感潮分汊河道平均分流、分沙比确定方法探讨[J].人民长江,2015, 46 (15): 18-21.
[13] 杨万伦,道付海,栾华龙,等.长江口洪季南北槽落潮分流分沙比观测研究[J].华东师范大学学报(自然科学版),2018 (2): 170-180.
[14] ZHU Jian-rong, CHEN Chang-sheng, RALPH E, et al. Prognostic Modeling Studies of the Keweenaw Current in Lake Superior. Part II: Simulation[J]. Journal of Physical Oceanography, 2001, 31: 396-410.
[15] WU Hui,ZHU Jian-rong. Advection Scheme with 3rd High-order Spatial Interpolation at the Middle Temporal Level and Its Application to Saltwater Intrusion in the Changjiang Estuary[J]. Ocean Modelling,2009,33(1/2): 33-51.
[16] 刘高峰. 长江口水沙运动及三维泥沙模型研究[D]. 上海:华东师范大学,2010: 211.
[17] 刘高峰. 长江口泥沙净输移模式初步研究[C] //浙江省水利河口研究院.第九届全国泥沙基本理论研究学术讨论会论文集.北京:中国水利水电出版社2014:278-283.
[18] 姜宁林,张长宽,陈永平.上游径流变化对长江澄通河段汊道分流比的影响[J].人民长江,2012, 43 (23): 33-36.
[19] 王建军,杨云平,申霞,等.长江下游福姜沙河段边心滩演变及对航槽冲淤影响研究[J].应用基础与工程科学学报,2020, 28 (4): 751-762.