Wave attenuation mechanism of cross-plates applied in landslide-induced tsunami in river course

doi:10.1007/s11629-016-4218-6

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.4

	Wave attenuation mechanism of cross-plates applied in landslide-induced tsunami in river course
	HUANG Bo-lin; WANG Shi-chang
刊名	Journal of Mountain Science
	2017-04
卷号	14 期号:4 页码:649-661
关键词	Landslide-induced Tsunami Cross-plates Wave Decay Energy Dissipation Attenuation Mechanism
ISSN号	1672-6316
DOI	10.1007/s11629-016-4218-6
通讯作者	HUANG Bo-lin
文献子类	期刊论文
英文摘要	Since the impounding of the Three Gorges Reservoir, the channel of the Yangtze River has become a busy watercourseand the probability of landslide-induced tsunamis has increased. In the case of landslide-induced tsunamis in the Three Gorges Reservoir, even after shipping closures in advance, there are still facilities and objects in urgent need of protection within the risk zone of the watercourse, such as wharfs, marine fueling stations, berthed ships. The emergency protection against and decay of landslide-induced tsunamis in inland watercourses is a new challenge. In this study, 37 sets of wave decay experiments were conducted with the hydromechanics numerical method. The wave decay efficiencies of common simple structures including submerged horizontal plate, horizontal plate on the water surface, inclined thin plate and cross-plates in coastal areas were compared and analyzed. Cross-plates structure showed better wave decay capacity than other simple plates. The wave decay performance of cross-plates was related to five modes of energy dissipation and transformation, namely run-up/run-down, overtopping, reflecting, return flow and disturbed wave orbital path. The type of wave had little relation with the decay performance of cross-plates, but a strong correlation with cross-plates structure, especially the height of the vertical emerged plate. The best decayperformance was observed when the ratio of wave amplitudetoemergedverticalplateheightwasbetween1 and 1.5, which can reduce up to about 80% of the incoming wave amplitude. Finally, the emergency way of cross-plates applied to the decay of landslide-induced tsunami in river course is discussed. This study provides a conceptual reference for related studies to practice the attenuation of landslide-induced tsunami in reservoirs.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/18548]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.4
推荐引用方式 GB/T 7714	HUANG Bo-lin,WANG Shi-chang. Wave attenuation mechanism of cross-plates applied in landslide-induced tsunami in river course[J]. Journal of Mountain Science,2017,14(4):649-661.
APA	HUANG Bo-lin,&WANG Shi-chang.(2017).Wave attenuation mechanism of cross-plates applied in landslide-induced tsunami in river course.Journal of Mountain Science,14(4),649-661.
MLA	HUANG Bo-lin,et al."Wave attenuation mechanism of cross-plates applied in landslide-induced tsunami in river course".Journal of Mountain Science 14.4(2017):649-661.