| 河口、海岸环境下床沙输运的初步实验研究 |
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| 引用本文： | 尹畅安,费建华.河口、海岸环境下床沙输运的初步实验研究[J].海岸工程,2002,21(3):14-18. |
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| 作者姓名： | 尹畅安 费建华 |
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| 作者单位： | 1. 河海大学,交通与海洋工程学院,江苏,南京,210098
2. 上海海洋水下工程科学研究院,上海,200231 |
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| 摘 要： | 量测了在水深0.5m的情况下波浪、水流通过水平沙床所产生的床沙输移。实验波高为0.15m，周期分别为1.4和2.0s。首先量测纯波浪下的床沙输移，然后量测波流共同作用下，水流与波浪行进方向一致其稳定速度分别为0.02,0.04,0.06m/s时的床沙输移，结果表明，2个沙槽所得的总输沙率在波周期2.0s时最大，净输沙率在波周期1.4s时最大，将波叠加在速度为0.02m/s的水流上时，2种波型的净输沙率都增加约1倍，水流为0.04m/s和0.06m/s时2种波型的净输沙率分别都减少。
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| 关 键 词： | 床沙输运 实验研究 共同作用 河口 海岸 波浪 水流 |
| 文章编号： | 1002-3682(2002)03-0014-05 |
| 修稿时间： | 2002年1月15日 |
A PRELIMINARY EXPERIMENT STUTY ON BED SAND TRANSPORT IN ESTURINE AND COASTAL ENVIRONMENTS |
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| YIN Chang-an,FEI Jian-hua.A PRELIMINARY EXPERIMENT STUTY ON BED SAND TRANSPORT IN ESTURINE AND COASTAL ENVIRONMENTS[J].Coastal Engineering,2002,21(3):14-18. |
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| Authors: | YIN Chang-an FEI Jian-hua |
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| Abstract: | Measurments were made for the bed sand transport caused by the wave and current travelling over a horizontal sand bed with a water depth of 0.5 m. The experimental wave height was 0.15 m, and the wave periods were 1.4 s and 2.0 s, respectively. The bed sand transports were measured first under the actions of wave only, and then under the joint actions of wave and current with the current direction consistent with the wave travelling direction and the current speeds being 0.02, 0.04 and 0.06 m/s, respectively. It is shown from the experimental results that the total sand transport rate caught in two sand traps was the largest with wave period of 2.0 s, while the net sand transport rate was the largest with wave period of 1.4 s ; the net sand transport rates for the two types of wave nearly doubled under the joint actions of wave and current of 0.02 m/s speed, while those decreased under the joint actions of wave and currents of 0.04 m/s and 0.06 m/s speeds. |
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| Keywords: | joint action of wave and current sand transport rate estuary and coast |
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