| 一种波浪作用下软质海崖侵蚀量计算模型 |
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| 引用本文： | 常方强,舒忠磊.一种波浪作用下软质海崖侵蚀量计算模型[J].海洋学报(英文版),2018,37(7):69-77. |
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| 作者姓名： | 常方强 舒忠磊 |
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| 基金项目： | The National Natural Science Foundation of China under contract No. 41306051; the Natural Science Foundation of Fujian Province of China under contract No. 2015J01625. |
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| 摘 要： | 基于波浪作用下软质海崖的侵蚀机理，考虑波浪水动力和海崖土质条件，建立了一种波浪作用下软质海崖侵蚀量的计算模型，利用室内水槽试验进行验证和参数回归，并使用该模型计算了平潭岛东北部软质海崖的侵蚀状况，与实测数据进行对比分析。研究发现：（1）海崖最大侵蚀量基本发生在静水位线处，随波浪持续作用，最大侵蚀量位置有所上移，当波浪持续作用一定时间时侵蚀基本停止；（2）当波高超过某一临界值时，侵蚀才会发生，而波高非常大的波浪对侵蚀的贡献相对不是很大；（3）平潭岛东北部的两处海崖，每次强台风连续作用8h时的侵蚀距离计算值为0.31m和0.25m。
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| 关 键 词： | 波浪 软质海崖 侵蚀 |
| 收稿时间： | 2017/3/14 0:00:00 |
A model for calculating the erosion distance of soft sea cliff under wave loading |
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| CHANG Fangqiang and SHU Zhonglei.A model for calculating the erosion distance of soft sea cliff under wave loading[J].Acta Oceanologica Sinica,2018,37(7):69-77. |
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| Authors: | CHANG Fangqiang and SHU Zhonglei |
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| Institution: | Faculty of Civil Engineering, Huaqiao University, Xiamen 361021, China |
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| Abstract: | A model for calculating the erosion distance of soft sea cliff under wave loading is established based on the erosion mechanism of soft sea cliff under wave loading and for considering wave hydrodynamic and sea cliff material parameters. The model is verified, and the parameters are regressed using an indoor flume experiment. The erosion distances of the sea cliff in the northeast of the Pingtan Island are calculated by the model, and the results are compared with the measured data. The maximum erosion occurs in static water level, the location of the maximum erosion moves up as the wave continues, and the erosion stops when the wave lasts for a period of time. The erosion does not occur until the wave height exceeds a critical value; however, the contribution of large waves to the erosion is not relatively substantial. The calculated erosion distances at two places in the northeast of Pingtan Island are 0.32 m and 0.26 m. |
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| Keywords: | wave soft sea cliff erosion |
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