基于MIKE21模型的椒江口常态下泥沙输运研究
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摘要
目的:验证MIKE21模型对椒江口-台州湾常态下泥沙输运应用的适用性。方法:利用MIKE21模型,构建了椒江口-台州湾泥沙输运数值模型,并对研究范围进行网格划分,结合该研究区域地形特征,以2009年4月26日至4月30日椒江口-台州湾实测资料为基础,模拟计算了椒江口-台州湾常态下的泥沙输运演进过程。结果:在研究时间段内潮位、流速流向以及含沙量等参数计算值与实测值符合性较好,河口流路和河道的走向一致,白沙—黄琅一线表现为较为明显的东海域潮流旋转流性质;验证点模拟含沙量量级及其变化趋势与实际情况量级大致相同。结论:率定后的计算模型对椒江口-台州湾模拟具有良好的适用性,可以用于常态下泥沙输运模拟。
Aims:This paper studies the distribution characteristics of sediment transport under the normal status of the Jiaojiang River estuary-Taizhou Bay by using the MIKE21 model.Methods:The numerical model of the Jiaojiang River estuary was constructed by using the MIKE21 model.With meshing division of the studied area accarding to its topographical features,the evolution of the Jiaojiang River estuary-Taizhou bay under normal status was calculated based on the measured data from April 26 to April 30 in 2009.Results:During the study period,the calculated tidal level,sea flow velocity and sediment concentration were in good agreement with the measured values.The estuary flow path and the river course were consistent.The BaishaHuangqi line was characterized by the relatively obvious tidal current flow in the east sea.Conclusions:The calculation model after verification rate has good applicability to the Jiaojiang River estuary-Taizhou bay simulation,and the sediment is affected by the tidal current.
Aims:This paper studies the distribution characteristics of sediment transport under the normal status of the Jiaojiang River estuary-Taizhou Bay by using the MIKE21 model.Methods:The numerical model of the Jiaojiang River estuary was constructed by using the MIKE21 model.With meshing division of the studied area accarding to its topographical features,the evolution of the Jiaojiang River estuary-Taizhou bay under normal status was calculated based on the measured data from April 26 to April 30 in 2009.Results:During the study period,the calculated tidal level,sea flow velocity and sediment concentration were in good agreement with the measured values.The estuary flow path and the river course were consistent.The BaishaHuangqi line was characterized by the relatively obvious tidal current flow in the east sea.Conclusions:The calculation model after verification rate has good applicability to the Jiaojiang River estuary-Taizhou bay simulation,and the sediment is affected by the tidal current.
引文
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[9]姚静,陶建峰,杨洁,等.南黄海辐射沙脊群潮汐通道水流输运示踪模拟[J].海洋环境科学,2017,36(3):406-415.YAO J,TAO J F,YANG J,et al.Modelling flow transport based on the particle tracking in tidal channels of radial sand ridges in south Yellow Sea[J].Marine Environmental Science,2017,36(3):406-415.
[10]张志林,贾艾晨.基于MIKE21FM模型的河道流场图绘制[J].东北水利水电,2016,34(10):35-37.ZHANG Z L,JIA A C.River flow diagram drawing based on MIKE21FM model[J].Water Resources&Hydropower of Northeast China,2016,34(10):35-37.
[2]符宁平,毕敖洪.椒江悬沙运动若干问题的探讨[J].泥沙研究,1989,33(3):51-57.FU N P,BI A H.Discussion on some problems of suspended sand movement in Jiaojiang River[J].Journal of Sediment Research,1989,33(3):51-57.
[3]李伯根,王才洪,周鸿权,等.近70a来椒江河口河床冲淤调整机理[J].海洋学报,2009,31(5):89-100.LI B G,WANG H C,ZHOU H Q,et al.Adjustment mechanism on the erosion and accretion of riverbed in the Jiaojiang Estuary in Zhejiang Province,China[J].Acta Oceanologica Sinica,2009,31(5):89-100.
[4]夏威夷,赵晓冬,张新周.椒江河口径、潮流变化对含沙量时空分布的影响[J].水利水运工程学报,2016,47(3):35-45.XIA W Y,ZHAO X D,ZHANG X Z.Influences of variations in runoff and tide on spatial and temporal distribution of sediment concentration in Jiaojiang River estuary[J].Hydro-Science and Engineering,2016,47(3):35-45.
[5]江晨曦,赵新宇,何光玉,等.椒江口外海域的悬沙沉降速度近似估算[J].科技通报,2016,32(5):25-29.JIANG C X,ZHAO X Y,HE G Y,et al.Settling velocity of suspended sediment in the Taizhou Bay[J].Bulletin of Science and Technology,2016,32(5):25-29.
[6]戴玮琦,陶建峰,张琴,等.椒江河口水沙特征分析和悬沙分布推算[J].水道港口,2016,37(2):128-134.DAI W Q,TAO J F,ZHANG Q,et al.Analysis on characteristics of hydrodynamic-sediment and calculation ondistribution of suspended sediment concentration in Jiaojiang Estuary[J].Journal of Waterway and Harbor,2016,37(2):128-134.
[7]陈德春,何蘅.浅析台州湾-椒江河口水文特性[J].水文,1998,42(5):52-54.CHEN D C,HE H.Analysis on hydrological characteristics of Taizhou Bay-Jiaojiang Estuary[J].Journal of China Hydrology,1998,42(5):52-54.
[8]郭聪.椒江河口对围海工程的响应[D].杭州:浙江大学,2016.GUO C.Response of Jiaojiang Estuary to Coastal Reclamation[D].Hangzhou:Zhejiang University,2016.
[9]姚静,陶建峰,杨洁,等.南黄海辐射沙脊群潮汐通道水流输运示踪模拟[J].海洋环境科学,2017,36(3):406-415.YAO J,TAO J F,YANG J,et al.Modelling flow transport based on the particle tracking in tidal channels of radial sand ridges in south Yellow Sea[J].Marine Environmental Science,2017,36(3):406-415.
[10]张志林,贾艾晨.基于MIKE21FM模型的河道流场图绘制[J].东北水利水电,2016,34(10):35-37.ZHANG Z L,JIA A C.River flow diagram drawing based on MIKE21FM model[J].Water Resources&Hydropower of Northeast China,2016,34(10):35-37.