| Qingdao Institute of marine geology, China Geological Survey | Host |
| Citation: |
XU Xinhui, ZHUANG Zhenye, CAO Lihua, QIU Ruofeng, ZHANG Yonghua. BEACH STATIC EQUILIBRIUM MODEL AND ITS APPLICATION[J]. Marine Geology Frontiers, 2020, 36(10): 1-11. doi: 10.16028/j.1009-2722.2019.173
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BEACH STATIC EQUILIBRIUM MODEL AND ITS APPLICATION
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Abstract
The headland-bay coast, where prevail active human activities, is an important part of the global coastal system and the study of such a coast is of great significance to coastal construction and development. Coastal scientists and engineers have tried hard to describe and quantify this kind of coast using various mathematical formulas, especially since the 1980s, and a variety of empirical models have been obtained. With the rapid development of computer technology in the new century, these theoretical results have been integrated into software, which makes the application of the theory more convenient and user-friendly, and the application of the theory is getting more common day by day. This paper made a detailed introduction to the static equilibrium bay theory and its application, taking some examples as cases, such as the construction of artificial islands and its impacts in Sanya Bay, the unstable beach in Imbituba, Brazil, the beach maintenance improvement program in Weifang coastal resort and the beach design in Gijon, Spain. Detailed discussion is devoted to the further application of the static equilibrium theory to beach stability assessment and interpretation, the selection of schemes to protect the coast from erosion, the use of the theory to beach evaluation and beach design and the assessment, improvement and construction of subsequent coastal programs.
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Keywords:
- headland bay coast /
- static equilibrium /
- engineering design /
- equilibrium beach /
- beach maintenance
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References
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XU Xinhui, ZHUANG Zhenye, CAO Lihua, QIU Ruofeng, ZHANG Yonghua. BEACH STATIC EQUILIBRIUM MODEL AND ITS APPLICATION[J]. Marine Geology Frontiers, 2020, 36(10): 1-11. doi: 10.16028/j.1009-2722.2019.173
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Figure 1.
Diagram of static equilibrium parabola
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Figure 2.
Changes of MEPBAY curves before and after the Phoenix Island project in Sanya Bay （courtesy of Google Earth imagery）
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Figure 3.
Impact of the breakwater construction of the Imbituba Pier in Brazil on the stability of the coast and response engineering （courtesy of Google Earth imagery）
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Figure 4.
Imbituba shoreline change from 1966 to 2001 （from reference [16]）
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Figure 5.
The erosion of artificial beach in Weifang Coastal Resort and its preliminary improvement plan for the first phase of the project （from reference [17]）
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Figure 6.
The effect of dam length，hook length and hook angle on beach design （take the Western District as an example；courtesy of Google Earth imagery）
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Figure 7.
Evaluation of existing spur design （courtesy of Google Earth imagery）
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Figure 8.
The location of Poniente Beach （from reference [19]）
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Figure 9.
Apply SMC to design a balanced beach （from reference [10]）
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Figure 10.
Overall design of the Ponente Beach （from reference [19]）