气候变化领域集成服务门户(CCPortal): Cellular automata model-based numerical analysis for breaching process of embankment dam

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DOI	10.1007/s11069-020-03986-x
	Cellular automata model-based numerical analysis for breaching process of embankment dam
	Su H.; Qian C.; Wen Z.; Yang L.
发表日期	2020
ISSN	0921030X
起始页码	251
结束页码	282
卷号	103 期号:1
英文摘要	It is of great significance to study the process and cause of embankment dam breach in order to ensure the dam safety. In this paper, the overtopping failure mode of embankment dam is selected as the research object, and the cellular automata (CA) method is introduced to explore the development law and influencing factors of the overtopping failure mode. Based on the physical and mechanical characteristics of embankment dam and the energy evolution law of the dam soil failure process, this paper discusses the realization method of CA for simulations of dam body heterogeneity, soil anisotropy, stress environment, etc., and proposes the determination method of cellular failure threshold, energy dissipation rate and energy transfer coefficient. Afterward, the loading mode of the CA model is determined based on the relationship between generalized energy and force deformation of the dam soil. Then, energy criterion for dam erosion failure and mechanical criterion of breach slope failure are put forward. Finally, the CA model is applied to a practical project so as to analyze the development and cause for scour depth and width of the overtopping failure breach, and the influence of overtopping water level and downstream slope ratio on the development of breach. © 2020, Springer Nature B.V.
关键词	Cellular automata Dam failure criterion Embankment dam Numerical simulation Overtopping
英文关键词	cellular automaton; embankment dam; energy dissipation; numerical model; overtopping
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205951
作者单位	State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China; National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing, China; Department of Computer Engineering, Nanjing Institute of Technology, Nanjing, China
推荐引用方式 GB/T 7714	Su H.,Qian C.,Wen Z.,et al. Cellular automata model-based numerical analysis for breaching process of embankment dam[J],2020,103(1).
APA	Su H.,Qian C.,Wen Z.,&Yang L..(2020).Cellular automata model-based numerical analysis for breaching process of embankment dam.Natural Hazards,103(1).
MLA	Su H.,et al."Cellular automata model-based numerical analysis for breaching process of embankment dam".Natural Hazards 103.1(2020).