Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines
[Objective] The flume simulation research on wave prevention and sand stabilization counter measures for coral sandy coastlines were studied in order to provide a theoretical basis for the project to protect coastlines against wave erosion along the Dengloujiao shoreline, located in the Xuwen Nation...
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| Format: | Article |
| Language: | zho |
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Science Press
2023-12-01
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| Series: | Shuitu baochi tongbao |
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| Online Access: | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230603 |
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| author | Qu Jianju Li Shaowu Jiang Chong Hu Wenli Liu Ye Li Qihang |
| author_facet | Qu Jianju Li Shaowu Jiang Chong Hu Wenli Liu Ye Li Qihang |
| author_sort | Qu Jianju |
| collection | DOAJ |
| description | [Objective] The flume simulation research on wave prevention and sand stabilization counter measures for coral sandy coastlines were studied in order to provide a theoretical basis for the project to protect coastlines against wave erosion along the Dengloujiao shoreline, located in the Xuwen National Coral Reef Nature Reserve on the Leizhou Peninsula, and to provide technical support for similar coastal areas. [Methods] The coastal erosion protection effect of san-dbag barrier measures was determined for the Dengloujiao coastline using a flume experiment simulation method. [Results] ① The composite effect of the overall structure of the diamond-shaped sand-bag barrier had a significant impact on the stability of the sand barrier. Two groups of sand barriers with a diameter of 5 cm or above was able to achieve self-stability. Calculated according to the gravity similarity criterion, this was equivalent to 50 cm diameter of the prototype; ② The sand-bag barrier achieved sediment fixation by increasing the roughness of the bed surface, weakening the hydrodynamic strength, and thereby reducing the intensity of sediment transport. As the diameter of the sand barrier increased, its shielding effect became more significant; ③ For a wave period of 1.90 s and a water depth of 0.4 m, the height of sand ridges observed in the experiment were 3—4 cm. Therefore, in practical projects, sand barriers with a diameter of 50 cm or more can prevent and control the migration of sand waves and sand ridges; ④ The sand barrier arranged in a diamond shape was less affected by oblique waves and had better stability than the sand barrier arranged in a normal direction. Therefore, it is advisable to use a diamond-shaped sand barrier to reduce the effect of oblique waves. [Conclusion] The use of sand-bag barriers as protective materials for coastal erosion not only achieved the goal of sand control, but also produced favourable ecological and environmental protection effects. These results could provide important scientific guidance and have significant and practical promotion value. |
| format | Article |
| id | doaj-art-34c8b60de10440b3b77ec08ddd017f8d |
| institution | Kabale University |
| issn | 1000-288X |
| language | zho |
| publishDate | 2023-12-01 |
| publisher | Science Press |
| record_format | Article |
| series | Shuitu baochi tongbao |
| spelling | doaj-art-34c8b60de10440b3b77ec08ddd017f8d2024-11-13T04:30:49ZzhoScience PressShuitu baochi tongbao1000-288X2023-12-01436182410.13961/j.cnki.stbctb.2023.06.0031000-288X(2023)06-0018-07Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy CoastlinesQu Jianju0Li Shaowu1Jiang Chong2Hu Wenli3Liu Ye4Li Qihang5Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, Guangdong 511458, ChinaState Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300354, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, Guangdong 511458, ChinaState Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300354, ChinaState Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300354, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, Guangdong 511458, China[Objective] The flume simulation research on wave prevention and sand stabilization counter measures for coral sandy coastlines were studied in order to provide a theoretical basis for the project to protect coastlines against wave erosion along the Dengloujiao shoreline, located in the Xuwen National Coral Reef Nature Reserve on the Leizhou Peninsula, and to provide technical support for similar coastal areas. [Methods] The coastal erosion protection effect of san-dbag barrier measures was determined for the Dengloujiao coastline using a flume experiment simulation method. [Results] ① The composite effect of the overall structure of the diamond-shaped sand-bag barrier had a significant impact on the stability of the sand barrier. Two groups of sand barriers with a diameter of 5 cm or above was able to achieve self-stability. Calculated according to the gravity similarity criterion, this was equivalent to 50 cm diameter of the prototype; ② The sand-bag barrier achieved sediment fixation by increasing the roughness of the bed surface, weakening the hydrodynamic strength, and thereby reducing the intensity of sediment transport. As the diameter of the sand barrier increased, its shielding effect became more significant; ③ For a wave period of 1.90 s and a water depth of 0.4 m, the height of sand ridges observed in the experiment were 3—4 cm. Therefore, in practical projects, sand barriers with a diameter of 50 cm or more can prevent and control the migration of sand waves and sand ridges; ④ The sand barrier arranged in a diamond shape was less affected by oblique waves and had better stability than the sand barrier arranged in a normal direction. Therefore, it is advisable to use a diamond-shaped sand barrier to reduce the effect of oblique waves. [Conclusion] The use of sand-bag barriers as protective materials for coastal erosion not only achieved the goal of sand control, but also produced favourable ecological and environmental protection effects. These results could provide important scientific guidance and have significant and practical promotion value.http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230603coral sandy coastlinecoastal erosionsand-bag barriersimulation experiment |
| spellingShingle | Qu Jianju Li Shaowu Jiang Chong Hu Wenli Liu Ye Li Qihang Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines Shuitu baochi tongbao coral sandy coastline coastal erosion sand-bag barrier simulation experiment |
| title | Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines |
| title_full | Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines |
| title_fullStr | Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines |
| title_full_unstemmed | Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines |
| title_short | Flume-based Experimental Study on Wave Prevention and Sand Fixation Functions of Sand Barriers Applied to Coral Sandy Coastlines |
| title_sort | flume based experimental study on wave prevention and sand fixation functions of sand barriers applied to coral sandy coastlines |
| topic | coral sandy coastline coastal erosion sand-bag barrier simulation experiment |
| url | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230603 |
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