DOI: 10.1007/s11069-020-03986-x
论文题名: Cellular automata model-based numerical analysis for breaching process of embankment dam
作者: Su H. ; Qian C. ; Wen Z. ; Yang L.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 1 起始页码: 251
结束页码: 282
语种: 英语
中文关键词: Cellular automata
; Dam failure criterion
; Embankment dam
; Numerical simulation
; Overtopping
英文关键词: cellular automaton
; embankment dam
; energy dissipation
; numerical model
; overtopping
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168750
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Su H.,Qian C.,Wen Z.,et al. Cellular automata model-based numerical analysis for breaching process of embankment dam[J]. Natural Hazards,2020-01-01,103(1)