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【目的】弱潮型尾闾河道的形态演变机制复杂，厘清其在水沙作用下的响应规律对于河道治理与防洪安全至关重要。【方法】通过开展系统的物理模型试验，观测不同水沙条件下蜿蜒河道的动态演变全过程。基于试验揭示的机理，结合河流阻力理论，引入河道比降、弗劳德数及床沙粒径等参数，构建了河道形态特征参数。利用支持向量机(SVM)对黄河下游历史水文断面数据进行分类，建立了河型的定量判别标准，确定了游荡、分汊与弯曲河型的定量化判别阈值。【结果】试验结果表明，河道演变呈现“稳定→微变→强变”的典型三阶段规律。水沙条件主导演变模式，高流量引发强烈侵蚀与改道，而高含沙量则导致淤积与拓宽。利用最新河道资料验证表明，该河型判别标准能有效判别河型转变，如孙口—艾山段已呈现向分汊型发展的趋势，与遥感影像判读结果一致。【结论】研究证实，物理模型是揭示河道演变机理的有效手段。所构建的形态参数模型实现了从定性描述到定量判别的跨越，对河道治理具有理论指导意义。
Abstract：[Objective]The morphological evolution mechanism of weakly tidal estuarine channels is complex. Clarifying its response to runoff and sediment dynamics is crucial for river channel regulation and flood control.[Methods]Systematic physical model experiments were conducted to observe the complete dynamic evolution process of meandering channels under different runoff and sediment conditions. Based on the mechanisms revealed by the tests, and combined with river resistance theory, parameters including channel slope, Froude number, and bed sediment size were introduced to construct characteristic morphological parameters. Historical hydrological cross-sectional data from the lower reaches of the Yellow River were classified using support vector machine(SVM), and quantitative criteria for river pattern identification were established.[Results]The experimental result indicated that river channel evolution exhibited a typical three-stage pattern: stable, slight change, and strong change. Runoff and sediment conditions dominated the evolution mode, where high flow triggered intense erosion and channel avulsion, while high sediment concentration led to deposition and channel widening. Based on this, quantitative thresholds for identifying wandering, braided, and meandering river patterns were established. Validation using recent river channel data confirmed the effectiveness of these criteria in identifying pattern transitions. For instance, the Sunkou-Aishan section was identified as transitioning towards a braided pattern, which was consistent with interpretations from remote sensing imagery.[Conclusion]Physical modeling is an effective approach for revealing river channel evolution mechanisms. The constructed morphological parameter model facilitates the transition from qualitative description to quantitative discrimination, offering theoretical guidance for river channel management.
[1] LIU Ruiqing,CHENG Heqin,CHEN Jinfeng,et al.Subaqueous multiscale bedform morphology dynamics in a mountainous macrotidal estuary[J].Frontiers in Marine Science,2025,12:1585285.
[2] BAUM M P,KENNEDY D M,MCSWEENEY S L.Large structural estuaries:Their global distribution and morphology [J].Geomorphology,2024,461:109309.
[3] NGUYEN T V,TANAKA H.Study on the effect of morphology change on salinity distribution in the Dinh An Estuary,Lower Mekong River of Vietnam [J].Journal of Coastal Research,2024,50:268-272.
[4] BAAR A W,BRAAT L,PARSONS D R.Control of river discharge on large-scale estuary morphology [J].Earth Surface Processes and Landforms,2023,48 (3):489-503.
[5] 刘雨佳，韩志勇，李徐生，等.涌潮沉积揭示长江河口湾全新世最高海面[J].海洋地质与第四纪地质，2022,42(3):160-169.LIU Yujia,HAN Zhiyong,LI Xusheng,et al.The sea-level highstand of the Changjiang River estuary in the Holocene revealed from tidal bore deposits[J].Marine Geology & Quaternary Geology,2022,42(3):160-169.
[6] 徐岱璐，殷勇，时连强，等.长江口外扬子浅滩YZ05孔沉积序列及晚更新世以来的环境演化[J].海洋地质与第四纪地质，2020,40(6):22-38.XU Dailu,YIN Yong,SHI Lianqiang,et al.Sedimentary facies and environmental evolution of the Yangtze shoal,eastern China Sea shelf since Late Pleistocene:Evidence from core YZ05[J].Marine Geology & Quaternary Geology,2020,40(6):22-38.
[7] 倪和平，毕磊，郭玉龙，等.长江口沉积物化学相态分析及主泓变迁的指示[J].沉积学报，2023,41(1):243-255.NI Heping,BI Lei,GUO Yulong,et al.Chemical Phases of Sediments in the Changjiang Estuary and the Indication for the Geomorphological Evolution of Changjiang Estuary[J].Acta sedimentologica Sinica,2023,41 (1):243-255.
[8] 陆永军，赵雅慧，左利钦，等.弱混合陆相河口三角洲水文连通性研究进展[J].水利水电科技进展，2025,45(5):129-140.LU Yongjun,ZHAO Yahui,ZUO Liqin,et al.Research progress on hydrological connectivity in weakly mixed land-dominated estuarine deltas[J].Advances in Science and Technology of Water Resources,2025,45(5):129-140.
[9] 朱沈鸣，李颖，陈刚，等.钱塘江河口尖山滩地短期演变及其影响因素[J].水电能源科学，2024,42(6):73-77.ZHU Shen-ming,Ll Ying,CHEN Gang,et al.Short-term evolution of Jianshan tidal flat in Qiantang River Estuary and its influencing factors[J].Water Resources and Power,2024,42 (6):73-77.
[10] 李若华，马继侠，张舒羽，等.强潮作用下钱塘江河口盐水入侵机制[J].水利水电科技进展，2022,42(5):37-44.LI Ruohua,MA Jixia,ZHANG Shuyu,et al.Saltwater intrusion mechanism in the Qiantang River estuary under strong tide[J].Advances in Science and Technology of Water Resources,2022,42 (5):37-44.
[11] XU Bochao,YANG Disong,BURNETT C W,et al.Artificial water sediment regulation scheme influences morphology,hydrodynamics and nutrient behavior in the Yellow River estuary[J].Journal of Hydrology,2016,539:102-112.
[12] WU Weiming.Toward a sustainable estuary-delta system for the Mississippi River[J].Journal of Hydraulic Engineering,2025,151(2):02524005.
[13] YANG Zhongyong,LIANG Zhiming,REN Yufeng,et al.Influence of asymmetric tidal mixing on sediment dynamics in a partially mixed estuary [J].Acta Oceanologica Sinica,2023,42 (9):1-15.
[14] ZENG Lin,ZHAN Chao,WANG Qing,et al.Sediment coarsening in tidal flats and stable coastline of the abandoned southern Yellow River Sub-Delta in response to fluvial sediment flux decrease during the past decades[J].Frontiers in Marine Science,2021,8:761368.
[15] TU Deyao,WANG Houjie,REN Yupeng,et al.Modeling of the sediment transport and deposition in the Yellow River Estuary during the water-sediment regulation scheme [J].Catena,2025,251:108806.
[16] LIU Yuanhao,WANG Fei,LIN Yuanyuan,et al.Assessing the contributions of human activities to runoff and sediment transport change:A method for break point identification in double mass curves based on model fitting [J].Journal of Hydrology:Regional Studies,2023,50:101589.
[17] SUN Yanjie,SONG Xiaolong,XU Haijue,et al.Navigating uncertainty:Stochastic simulation prediction of the Yellow River tail channel (fluvial reach) and its implications on 21st century floodplain management[J].Geomorphology,2025,472:109584.
[18] XU Haijue,SONG Xiaolong,BAI Yuchuan.Experiments on the deterministic and non-deterministic responses of lacustrine deltaic channels to water inflow[J].Hydrological Sciences Journal,2021,66 (15):2170-2187.
[19] 白玉川，胡晓，徐海珏，等.入湖浅水三角洲形成过程实验模拟分析[J].水利学报，2018,49(5):549-560.BAI Yuchuan,HU Xiao,XU Haijue,et al.Experimental analysis of the formation process of lacustrine shallow-water delta[J].Journal of Hydraulic Engineering,2018,49(5):549-560.
[20] LEE S H,HYUN C U,KIM S B.Assessing sandbar morphology in the Nakdong River Estuary using SPOT series satellite imagery[J].Marine Georesources & Geotechnology,2025,43(6):1013-1023.
[21] KARAPURKAR D,RAMAKRISHNAN R,HEGDE V S.Tidally modulated sediment dispersion in engineered tropical estuary:implications for estuarine morphological evolution[J].Journal of Sedimentary Environments,2025,10(2):281-301.
[22] HOSSAIN F,KAMAL M A,AFRIN T.Fluvio-geomorphic change of the Padma-Meghna river course using the NDWI and MNDWI techniques[J].Water Science,2024,38 (1):293-310.
[23] MAHMOODZADA A B,VARADE D,SHIMADA S,et al.Quantification of Amu River riverbank erosion in Balkh Province of Afghanistan during 2004—2020 [J].Land,2023,12 (10):1890.
[24] LAONAMSAI J,JULPHUNTHONG P,SAPRATHET T,et al.Utilizing NDWI,MNDWI,SAVI,WRI,and AWEI for estimating erosion and deposition in Ping River in Thailand [J].Hydrology,2023,10 (3):70.
[25] SUFYAN A,AKHWADY R,PURBANI D,et al.Evolution of the Porong River Estuary,Indonesia:Morphological changes of Lusi Island through sediment modeling and time-series interpretation of MNDWI [J].Anthropocene Coasts,2025,8 (1):32.
[26] 于守兵，冯昊天，付慧薇.长历时低含沙洪水条件下的黄河河口演变特征[J].泥沙研究，2023,48(3):74-80.YU Shoubing,FENG Haotian,FU Huiwei.Evolution of the Yellow River Estuary in long time and low sediment concentration flood[J].Journal of Sediment Research,2023,48 (3):74-80.
[27] BAI Yuchuan,SUN Yanjie,SONG Xiaolong,et al.An improved method for sand wave morphology discrimination in rivers by combining a flow resistance law and support vector machines [J].International Journal of Sediment Research,2024,39 (1):144-152.
[28] DE MENEZES D,BORGES A L O.Bed roughness in gravel-bed rivers:Channel-scale responses to flow and sediment dynamics[J].Advances in Water Resources,2025,206:105146.
[29] 陈艳东.大凌河泥沙冲淤演变及其影响因素研究[J].水利科学与寒区工程，2024,7(12):17-19.CHEN Y D.Study on the sedimentation and erosion evolution of the Daling River and its influencing factors[J].Hydro Science and Cold Zone Engineering,2024,7(12):17-19.
[30] MAALEM N,BEGMATOV I,KHASANOV K,et al.Dynamics of hydraulic resistance in the zone of constraint of the riverbed[J].IOP Conference Series:Materials Science and Engineering,2020,869 (4):042012.
[31] DE LA FUENTE J C,SHIMOYAMA Y.Correlating mean particle size of pure solids in supercritical antisolvent processes using dimensional analysis with the Buckingham π-theorem[J].The Journal of Supercritical Fluids,2025,218:106512.
[32] CHEN Jianwu,XIAO Wu,JIANG Zhibo,et al.CS-MI-PSVM:An efficient approach for leak identification in water supply pipelines[J].Next Research,2025,2 (4):100787.
[33] 徐国宾，赵丽娜.基于能耗率的黄河下游河型变化趋势分析 [J].水利学报，2013,44 (5):622-626.XU Guobin,ZHAO Lina.Analysis of river pattern change trends in the lower Yellow River based on energy consumption rate[J].Journal of Hydraulic Engineering,2013,44(5):622-626.
[34] 余欣，吉祖稳，王开荣，等.黄河河口演变与流路稳定关键技术研究[J].人民黄河，2020,42(9):66-70.YU Xin,JI Zuwen,WANG Kairong,et al.Morphological changes of the Yellow River estuary and key technology for its course stabilization[J].Yellow River,2020,42 ( 9 ):66-70.
[35] FOFONOVA V,KÄRNÄ T,KLINGBEIL K,et al.Plume spreading test case for coastal ocean models[J].Geoscientific Model Development,2021,14 (11):6945-6975.
[36] QIU Yu,LI Wei,CHEN Fuyuan,et al.Hydrodynamics of the Qiantang tidal bore and its responses to embankment,morphology,and river discharge[J].Sustainability,2025,17(16):7363.
[37] DING Yujie,ZHANG Lifeng,HE Yi,et al.Spatiotemporal evolution of agricultural drought and its attribution under different climate zones and vegetation types in the Yellow River Basin of China[J].Science of the Total Environment,2024,914:169687.
[38] ZHANG Jiao,ZHANG Xinlong,WANG Wen,et al.Investigation of aquatic vegetation evolution in rivers based on a two-dimensional hydrodynamic model[J].Journal of Environmental Management,2025,389:126178.
[39] XUE Dawei,BUSCARNERA G.Numerical quantification of shear band-induced scale effects in physical models[J].Journal of Geotechnical and Geoenvironmental Engineering,2025,151(11):04025137.
基本信息:
DOI：10.13928/j.cnki.wrahe.2026.03.017
中图分类号:TV147
引用信息:
[1]李连文,程丽,孙艳杰,等.弱潮型河道形态演化与河型判别方法：以黄河下游为例[J].水利水电技术(中英文),2026,57(03):239-257.DOI:10.13928/j.cnki.wrahe.2026.03.017.
基金信息:
国家自然科学基金青年基金项目“过渡型蜿蜒河道的控制性水流特征与形态演变过程研究”(52409103)
2026-02-02
2026-02-02
2026-02-02