潜堤对岛礁次重力波波浪特性影响的试验研究

doi:10.11978/2024199

Abstract

Abstract:

In the South China Sea region, several coral reefs have undergone land reclamation projects. However, due to their unique geographical environment, these islands and reefs remain highly vulnerable to natural disasters such as tsunamis and storm surges. Given the limited protective capacity of the reefs themselves, ensuring the safety of personnel and infrastructure on these islands remains challenging. Therefore, constructing coastal protection measures around them is of critical importance. This study investigates the influence of submerged breakwaters on wave propagation characteristics and wave run-up under infragravity wave conditions through wave flume tests, focusing on the regulatory effects of submerged breakwaters on hydrodynamic characteristics, mean water levels, and wave run-up. The results reveal that submerged breakwaters significantly alter the hydrodynamic properties of infragravity waves, inducing earlier wave breaking and amplifying low-frequency wave amplitudes in the reef flat region. At the same time, the impact of submerged breakwaters on the mean water level in the reef flat is closely related to variations in significant wave height and spectral peak period, generally leading to an increase in mean water level. However, as reef flat water depth increases or the breakwater is positioned further offshore, the mean water level tends to decrease. Additionally, low-frequency waves consistently dominate the wave run-up contribution, regardless of the presence of the breakwater. Nevertheless, with the breakwater moving closer to the island or an increase in reef flat water depth, the contribution of short-wave run-up becomes more pronounced, eventually surpassing that of low-frequency wave run-up.

Key words: coral reefs, submerged breakwaters, infragravity waves, hydrodynamic characteristics, mean water level, wave run-up

CLC Number:

P731.22

LI Wei, QU Ke, WANG Chao, YU Renshi, ZHANG Ze. Experimental study on the influence of submerged breakwater on the wave characteristics of infragravity waves on coral reefs[J].Journal of Tropical Oceanography, 2025, 44(4): 177-186.

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References 19

[1]	范海荣, 许峰, 王俊, 等, 2015. 潜堤对波浪传播变形的物理模型试验研究[J]. 海洋湖沼通报, 37(1): 121-128.
	FAN HAIRONG, XU FENG, WANG JUN, et al, 2015. Experimental study of wave transmission over a submerged breakwater[J]. Transactions of Oceanology and Limnology, 37(1): 121-128 (in Chinese with English abstract).
[2]	任冰, 唐洁, 王国玉, 等, 2018. 规则波在岛礁地形上传播变化特性的试验[J]. 科学通报, 63(Z1): 590-600.
	REN BING, TANG JIE, WANG GUOYU, et al, 2018. Experimental investigation of monochromatic wave transformation characteristics over the coral reefs[J]. Chinese Science Bulletin, 63(Z1): 590-600 (in Chinese with English abstract).
[3]	王超, 屈科, 王旭, 等, 2024. 类海啸波在非平整岛礁上传播与演变的试验研究[J]. 热带地理, 44(10): 1838-1846.
	WANG CHAO, QU KE, WANG XU, et al, 2024. Experimental study on complex hydrodynamics of tsunami-like waves over fringing reefs with uneven flat topography[J]. Tropical Geography, 44(10): 1838-1846 (in Chinese with English abstract).
[4]	王旭, 屈科, 门佳, 2024. 人工采砂坑对规则波岸礁水动力特性的影响研究[J]. 海洋通报, 43(1): 69-85.
	WANG XU, QU KE, MEN JIA, 2024. Study on the effects of artificial excavation pits on the hydrodynamic characteristics of regular wave over fringing reef[J]. Marine Science Bulletin, 43(1): 69-85 (in Chinese with English abstract).
[5]	姚宇, 何天城, 唐政江, 等, 2019. 珊瑚礁礁坪宽度对波浪传播变形及增水影响的实验研究[J]. 热带海洋学报, 38(2): 13-19.
	YAO YU, HE TIANCHENG, TANG ZHENGJIANG, et al, 2019. Laboratory study on the effect of varying reef-flat width on wave transformation and wave-induced setup[J]. Journal of Tropical Oceanography, 38(2): 13-19 (in Chinese with English abstract).
[6]	姚宇, 钟翔, 2023. 岛礁水沙动力学研究综述[J]. 长沙理工大学学报(自然科学版), 20(4): 1-10.
	YAO YU, ZHONG XIANG, 2023. A review of water-sediment dynamics around the reef islands[J]. Journal of Changsha University of Science & Technology (Natural Science), 20(4): 1-10 (in Chinese with English abstract).
[7]	赵恩金, 徐照妍, 潘新颖, 等, 2019. 人工沙滩与潜堤结合岸滩防护工程数值研究[J]. 中国海洋大学学报(自然科学版), 49(6): 119-125.
	ZHAO ENJIN, XU ZHAOYAN, PAN XINYING, et al, 2019. Numerical study on the coastal protection engineering of combination of artificial beach and submerged breakwater[J]. Periodical of Ocean University of China, 49(6): 119-125 (in Chinese with English abstract).
[8]	BUCKLEY M L, LOWE R J, HANSEN J E, et al, 2016. Wave setup over a fringing reef with large bottom roughness[J]. Journal of Physical Oceanography, 46(8): 2317-2333.
[9]	DATTATRI J, RAMAN H, SHANKAR N J, 1978. Performance characteristics of submerged breakwaters[C]// Coastal Engineering 1978. Hamburg: American Society of Civil Engineers: 2153-2171.
[10]	FANG KEZHAO, XIAO LI, LIU ZHONGBO, et al, 2022. Experiment and RANS modeling of solitary wave impact on a vertical wall mounted on a reef flat[J]. Ocean Engineering, 244: 110384.
[11]	GOURLAY M R, 1996. Wave set-up on coral reefs. 1. Set-up and wave-generated flow on an idealised two dimensional horizontal reef[J]. Coastal Engineering, 27(3-4): 161-193.
[12]	LIU WEIJIE, SHAO KEQI, NING YUE, et al, 2020. Numerical study of the impact of climate change on irregular wave Run-up over reef-fringed coasts[J]. China Ocean Engineering, 34(2): 162-171.
[13]	LOWE R J, SHAVIT U, FALTER J L, et al, 2008. Modeling flow in coral communities with and without waves: a synthesis of porous media and canopy flow approaches[J]. Limnology and Oceanography, 53(6): 2668-2680.
[14]	MONISMITH S G, ROGERS J S, KOWEEK D, et al, 2015. Frictional wave dissipation on a remarkably rough reef[J]. Geophysical Research Letters, 42(10): 4063-4071.
[15]	NING YUE, LIU WEIJIE, ZHAO XIZENG, et al, 2019. Study of irregular wave Run-up over fringing reefs based on a shock-capturing Boussinesq model[J]. Applied Ocean Research, 84: 216-224.
[16]	QU K, WANG X, YAO Y, et al, 2024. Numerical investigation of infragravity wave hydrodynamics at fringing reef with a permeable layer[J]. Continental Shelf Research, 275: 105212.
[17]	STOCKDON H F, HOLMAN R A, HOWD P A, et al, 2006. Empirical parameterization of setup, swash, and runup[J]. Coastal Engineering, 53(7): 573-588.
[18]	STORLAZZI C D, LOGAN J B, FIELD M E, 2003. Quantitative morphology of a fringing reef tract from high-resolution laser bathymetry: Southern Molokai, Hawaii[J]. Geological Society of America Bulletin, 115(11): 1344-1355.
[19]	YAO Y, LO E Y M, HUANG Z H, et al, 2009. An experimental study of wave-induced set-up over a horizontal reef with an idealized ridge[C]// ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Honolulu: ASME: 383-389.

工况编号	有效波高H_s/m	礁坪水深h_r/m	谱峰周期T_p/s	潜堤位置X_bw/m	工况编号	有效波高H_s/m	礁坪水深h_r/m	谱峰周期T_p/s	潜堤位置X_bw/m
A1	0.04	0.015	1.5	0	B7	0.06	0.03	1.5	25.05
A2	0.06	0.015	1.5	0	B8	0.06	0.045	1.5	25.05
A3	0.08	0.015	1.5	0	C1	0.06	0.015	1	0
A4	0.10	0.015	1.5	0	C2	0.06	0.015	1.25	0
A5	0.04	0.015	1.5	25.05	C3	0.06	0.015	1.5	0
A6	0.06	0.015	1.5	25.05	C4	0.06	0.015	1.75	0
A7	0.08	0.015	1.5	25.05	C5	0.06	0.015	1	25.05
A8	0.10	0.015	1.5	25.05	C6	0.06	0.015	1.25	25.05
B1	0.06	0	1.5	0	C7	0.06	0.015	1.5	25.05
B2	0.06	0.015	1.5	0	C8	0.06	0.015	1.75	25.05
B3	0.06	0.03	1.5	0	D1	0.06	0.015	1.5	24.72
B4	0.06	0.045	1.5	0	D2	0.06	0.015	1.5	24.83
B5	0.06	0	1.5	25.05	D3	0.06	0.015	1.5	24.94
B6	0.06	0.015	1.5	25.05	D4	0.06	0.015	1.5	25.05

Experimental study on the influence of submerged breakwater on the wave characteristics of infragravity waves on coral reefs

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