| 太湖疏浚前后波浪扰动下的底泥再悬浮特征 |
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| 引用本文： | 申霞,洪大林,丁艳青,姬昌辉,于剑.太湖疏浚前后波浪扰动下的底泥再悬浮特征[J].水科学进展,2011,22(4):580-585. |
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| 作者姓名： | 申霞 洪大林 丁艳青 姬昌辉 于剑 |
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| 作者单位： | 1.南京水利科学研究院水文水资源与水利工程科学国家重点实验室 江苏南京 210029; |
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| 基金项目： | 江苏省基础研究计划资助项目(BK2007733)~~ |
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| 摘 要： | 在室内波浪水槽中,研究不同底泥容重、不同波浪动力条件下底泥的再悬浮特征.结果表明:静止状态下,水体垂向悬浮物浓度差别不大,小波作用时底泥未普遍起动,各层悬浮物浓度增加不明显.随着大波浪的作用,底部切应力远大于底泥起动临界切应力,水体悬浮物浓度急剧增加,10 min内悬浮物浓度增加10 ～ 15倍,60 min内再悬浮量...
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| 关 键 词： | 波浪水槽试验 底泥容重 切应力 再悬浮量 |
| 收稿时间： | 2010-07-02 |
Sediment resuspension characteristics under wave distributing of dredging in Taihu Lake |
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| SHEN Xia,HONG Da-lin,DING Yan-qing,JI Chang-hui,YU Jian.Sediment resuspension characteristics under wave distributing of dredging in Taihu Lake[J].Advances in Water Science,2011,22(4):580-585. |
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| Authors: | SHEN Xia HONG Da-lin DING Yan-qing JI Chang-hui YU Jian |
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| Institution: | 1.Nanjing Hydraulic Research Institute State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China;2.Nanjing Institute of Geography & Limnology, CAS, Nanjing 210008, China |
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| Abstract: | Sediment resuspension characteristics are studied using the laboratory wave flume with different sediment bulk densities(1.34 g/cm3,1.47 g/cm3,1.55 g/cm3,and 1.59 g/cm3) and wave hydrodynamics.Results show that the vertical concentration of suspended sediments is almost uniform without the influence of wave action.Only local sediment resuspension can be observed for small wave amplitudes.The vertical variation in suspended sediment concentrations is insignificant.When the wave height reaches 9 cm,the bottom... |
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| Keywords: | wave flume test bulk density of sediment shear stress resuspension |
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