Numerical study of shoreline changes by emergency beach nourishment project at the Middle Beach of Beidaihe, China |
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| Authors: | ZHANG Yu HE Lulu KUANG Cuiping PAN Yi GU Jie YANG Yanxiong and ZHANG Jiabo |
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| Institution: | College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;College of Marine Science, Shanghai Ocean University, Shanghai 201306, China;Qinhuangdao Mineral Resource and Hydrogeological Brigade, Hebei Geological Prospecting Bureau, Qinhuangdao 066003, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;Qinhuangdao Mineral Resource and Hydrogeological Brigade, Hebei Geological Prospecting Bureau, Qinhuangdao 066003, China |
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| Abstract: | Beach nourishment is a common coastal management strategy used to protect beach from erosion along the sandy coastlines. This method has been successfully applied to an emergency project at the West Beach of Beidaihe in the summer of 2008 and the full West Beach nourishment project in 2009-2010, which is the direct base of this study. Some basic information about the emergency engineering area at the Middle Beach is firstly described. The shoreline change of this area, including the analysis of beach width in five monitoring profiles in the bathing places of Middle Beach, is then discussed. After that a numerical model based on one-line theory is established and the numerical results agree well with the measured shorelines, which indicates that the model is appropriate and is qualified to predict the shoreline change of the Middle Beach. With the same model and parameters, long-term performance of the project is predicted, and the result shows that without follow-up nourishment and project, the bathing places can remain suitable for bathing for about 10 a. It is suggested to nourish the beach in time and carry out the beach nourishment project for the full Middle Beach in Beidaihe. |
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| Keywords: | one-line model numerical model shoreline change beach nourishment Middle Beach in Beidaihe |
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