三峡水库应急补水对2022年洪季长江口盐水入侵的影响

仇威; 栾华龙; 渠庚; 雷文韬; 林木松; 朱建荣

doi:10.11988/ckyyb.20240616

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raybet体育在线院报 ›› 2024, Vol. 41 ›› Issue (10) : 30-39. DOI: 10.11988/ckyyb.20240616

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三峡水库应急补水对2022年洪季长江口盐水入侵的影响

仇威 ¹^,² ,
栾华龙 ¹^,² ,
渠庚 ¹^,² ,
雷文韬 ¹^,² ,
林木松 ¹^,² ,
朱建荣 ³

作者信息 +

Impact of Emergent Water Supply of the Three Gorges Reservoir on Saltwater Intrusion in the Changjiang River Estuary in 2022

QIU Wei ¹^,² ,
LUAN Hua-long ¹^,² ,
QU Geng ¹^,² ,
LEI Wen-tao ¹^,² ,
LIN Mu-song ¹^,² ,
ZHU Jian-rong ³

Author information +

文章历史 +

摘要

2022年汛期长江流域发生了历史罕见的流域性干旱,大通站9—10月份流量在11 000 m³/s上下浮动。9月份开始,叠加台风的影响,长江口遭遇了严重的盐水入侵事件,威胁上海市供水安全。结合实测流量、风速和盐度数据分析,认为此次盐水入侵由低流量和台风导致;基于此,采用三维河口海岸数值模型定量分析三峡水库应急补水的压咸效果。结果表明,应急补水削弱了长江口的盐水入侵,减小了咸潮上溯距离,南支—北港纵断面0.45 psu等盐度线下移了17 km,降低了水库取水口盐度,为青草沙水库争取了约6 h的取水窗口。10月份2次寒潮在一定程度上削弱了此次补水效果,为确保补水效果需加强河口地区水文、潮汐及气象综合监测能力,以保障上海市淡水利用安全。

Abstract

During the flood season of 2022, the Changjiang River Basin experienced an unprecedented basin-wide drought. From September to October, the runoff at Datong Station fluctuated around 11,000 m³/s. Since September, the Changjiang River Estuary has faced severe saltwater intrusion due to typhoons, jeopardizing the water supply security of Shanghai. Based on analysis of measured runoff, wind speed, and salinity data, we conclude that low runoff combined with typhoons triggered the saltwater intrusion. We employed a three-dimensional estuary and coastal numerical model to quantitatively assess the impact of emergent water supply from cascading reservoirs. The emergent water supply mitigated saltwater intrusion in the Changjiang River Estuary, reducing the upward distance of saline water and shifting the 0.45 psu isohaline towards downstream by 17 km in the South Branch-North Channel section. This action reduced the salinity of reservoir water intake and extended the water intake window for the Qingcaosha Reservoir by approximately 6 hours. However, two cold fronts in October weakened the effectiveness of the water supply to some extent. To enhance the reliability of the water supply, it is crucial to strengthen comprehensive monitoring of hydrology, tides, and meteorology in the estuarine area, thereby ensuring the safety of freshwater utilization in Shanghai.

导出引用

仇威, 栾华龙, 渠庚, 等. 三峡水库应急补水对2022年洪季长江口盐水入侵的影响[J]. raybet体育在线院报. 2024, 41(10): 30-39 https://doi.org/10.11988/ckyyb.20240616

QIU Wei, LUAN Hua-long, QU Geng, et al. Impact of Emergent Water Supply of the Three Gorges Reservoir on Saltwater Intrusion in the Changjiang River Estuary in 2022[J]. Journal of Yangtze River Scientific Research Institute. 2024, 41(10): 30-39 https://doi.org/10.11988/ckyyb.20240616

中图分类号： P731.2

参考文献

列表( 原文顺序 | 文献年度倒序 | 文中引用次数倒序 ) 可视化分析

[1]	茅志昌, 沈焕庭, 姚运达. 长江口南支南岸水域盐水入侵来源分析[J]. 海洋通报, 1993(3): 17-25. (MAO Zhi-chang, SHEN Huan-ting, YAO Yun-da. Analysis of Sources of Saltwater Intrusion along South Bank of South Branch of Yangtse River Estuary[J]. Marine Science Bulletin, 1993(3): 17-25. (in Chinese)) 本文引用 [1]

[2]	肖成猷, 沈焕庭. 长江河口盐水入侵影响因子分析[J]. 华东师范大学学报(自然科学版), 1998(3): 74-80. (XIAO Cheng-you, SHEN Huan-ting. The Analysis of Factors Affecting the Saltwater Intrusion in Changjiang Estuary[J]. Journal of East China Normal University(Natural Science), 1998(3): 74-80. (in Chinese))) 本文引用 [1]

[3]	沈焕庭, 茅志昌, 朱建荣. 长江河口盐水入侵[M]. 北京: 海洋出版社, 2003: 15-74. (SHEN Huan-ting, MAO Zhi-chang, ZHU Jian-rong. Saltwater Intrusion in Changjiang Estuary[M]. Beijing: China Ocean Press, 2003: 15-74. (in Chinese)) 本文引用 [1]

[4]

朱建荣, 傅利辉, 吴辉. 风应力和科氏力对长江河口没冒沙淡水带的影响[J]. 华东师范大学学报(自然科学版), 2008(6): 1-8, 39.

(ZHU

Jian-rong

, FU

Li-hui

, WU

Hui

. Impact of Wind Stress and Coriolis Force on the Freshwater Zone near Meimaosha in the Changjiang Estuary[J]. Journal of East China Normal University (Natural Science), 2008(6): 1-8, 39. (in Chinese)))

本文引用 [1]

[5]	LI L, ZHU J, WU H. Impacts of Wind Stress on Saltwater Intrusion in the Yangtze Estuary[J]. Science China Earth Sciences, 2012, 55(7): 1178-1192. 本文引用 [1]

[6]	WU H, ZHU J, CHOI B H. Links between Saltwater Intrusion and Subtidal Circulation in the Changjiang Estuary: A Model-guided Study[J]. Continental Shelf Research, 2010, 30(17): 1891-1905. 本文引用 [1]

[7]	LI L, ZHU J, WU H, et al. Lateral Saltwater Intrusion in the North Channel of the Changjiang Estuary[J]. Estuaries and Coasts, 2014, 37(1): 36-55. 本文引用 [1]

[8]	项印玉, 朱建荣, 吴辉. 冬季陆架环流对长江河口盐水入侵的影响[J]. 自然科学进展, 2009, 19(2): 192-202. (XIANG Yin-yu, ZHU Jian-rong, WU Hui. The Impact of the Shelf Circulations on the Saltwater Intrusion in the Changjiang Estuary in Winter[J]. Progress in Natural Sciences, 2009, 19(2): 192-202. (in Chinese)) 本文引用 [1]

[9]	VAN DER SCHEER B. Determining the Effects of a Hydropower Dam and Climate Change on Salt Intrusion in the Gambia Estuary up to 2100[D]. Delft, Netherlands: Delft University of Technology, 2021. 本文引用 [1]

[10]

朱建荣, 吴辉, 李路, 等. 极端干旱水文年(2006)中长江河口的盐水入侵[J]. 华东师范大学学报(自然科学版), 2010(4):1-6,25.

(ZHU

Jian-rong

, WU

Hui

, LI

, et al. Saltwater Intrusion in the Changjiang Estuary in the Extremely Drought Hydrological Year 2006[J]. Journal of East China Normal University (Natural Science), 2010(4):1-6, 25. (in Chinese)))

本文引用 [1]

[11]

唐建华, 赵升伟, 刘玮祎, 等. 三峡水库对长江河口北支咸潮倒灌影响探讨[J]. 水科学进展, 2011, 22(4): 554-560.

(TANG

Jian-hua

, ZHAO

Sheng-wei

, LIU

Wei-yi

, et al. Influences of Three Gorges Reservoir on Salt Water Intrusion from the North Branch to the South Branch of the Yangtze River Estuary[J]. Advances in Water Science, 2011, 22(4): 554-560. (in Chinese)))

本文引用 [1]

[12]	李林江, 朱建荣. 冬季北风风速对长江河口盐水入侵的影响[J]. 海洋学报, 2021, 43(10):10-22. (LI Lin-jiang, ZHU Jian-rong. The Effects of North Wind Speed in Winter on Saltwater Intrusion in the Changjiang Estuary[J]. Haiyang Xuebao, 2021, 43(10): 10-22. (in Chinese))) 本文引用 [1]

[13]	李林江. 持续强北风作用下长江河口盐水入侵研究[D]. 上海: 华东师范大学, 2020. (LI Lin-jiang. Study on Salt Water Intrusion in the Yangtze River Estuary under the Action of Persistent Strong North Wind[D]. Shanghai: East China Normal University, 2020. (in Chinese)) 本文引用 [1]

[14]	ZHU J, CHENG X, LI L, et al. Dynamic Mechanism of an Extremely Severe Saltwater Intrusion in the Changjiang Estuary in February 2014[J]. Hydrology and Earth System Sciences, 2020, 24(10): 5043-5056. 本文引用 [1]

[15]

仇威, 朱建荣. 持续强北风天气下长江口盐水入侵对径流量的响应[J]. 华东师范大学学报(自然科学版), 2023(3):132-146.

(QIU

Wei

,ZHU Jian-rong. Responses of Saltwater Intrusion in the Changjiang Estuary to Various River Discharge under a Persistent and Strong Northerly Wind[J]. Journal of East China Normal University (Natural Science), 2023(3): 132-146. (in Chinese)))

本文引用 [1]

[16]	BLUMBERG A F, MELLOR G L. A Description of a Three-dimensional Coastal Ocean Circulation Model[M]//Coastal and Estuarine Sciences. WashingtonD. C.: American Geophysical Union, 1987: 1-16. 本文引用 [1]

[17]	ARAKAWA A, LAMB V R. Computational Design of the Basic Dynamical Processes of the UCLA General Circulation Model[M]//Methods in Computational Physics:Advances in Research and Applications. Amsterdam: Elsevier, 1977: 173-265. 本文引用 [1]

[18]	CHEN C, LIU H, BEARDSLEY R C. An Unstructured Grid, Finite-Volume, Three-Dimensional, Primitive Equations Ocean Model: Application to Coastal Ocean and Estuaries[J]. Journal of Atmospheric and Oceanic Technology, 2003, 20(1): 159. 本文引用 [1]

[19]	CASULLI V, CATTANI E. Stability, Accuracy and Efficiency of a Semi-implicit Method for Three-dimensional Shallow Water Flow[J]. Computers & Mathematics with Applications, 1994, 27(4): 99-112. 本文引用 [1]

[20]	吴辉. 长江河口盐水入侵研究[D]. 上海: 华东师范大学, 2006. (WU Hui. Study on Salt Water Intrusion in the Yangtze River Estuary[D]. Shanghai: East China Normal University, 2006. (in Chinese)) 本文引用 [1]

[21]	WU H, ZHU J. 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, 2010, 33(1/2): 33-51. 本文引用 [1]

[22]	海洋图集编委会. 渤海黄海东海海洋图集:水文[M]. 北京: 海洋出版社, 1992:13-168. (Ocean Atlas Commission. Bohai Sea, Ocean Atlas in Huanghai Sea and East China Sea Hydrology[M]. Beijing: China Ocean Press, 1992:13-168. (in Chinese)) 本文引用 [1]