DOI: 10.1007/s11069-021-04649-1
论文题名: Formation and evolution characteristics of dam breach and tailings flow from dam failure: an experimental study
作者: Tian S. ; Dai X. ; Wang G. ; Lu Y. ; Chen J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 107, 期: 2 起始页码: 1621
结束页码: 1638
语种: 英语
中文关键词: Dam stability
; Deposition characteristics
; Mudflow disaster
; Physical model
; Submerged depth
; Tailings dam
英文关键词: dam failure
; deposition
; experimental study
; particle size
; tailings dam
英文摘要: The safety of tailings impoundments has long been a concern of academic researchers globally. The tailings dam breaks are extremely likely to induce secondary disasters such as mudflows, landslides and water and soil pollution, thus further aggravating the risk of accidents. On the basis of practical engineering, this study performed a dam-break physical model experiment and theoretical analysis to examine tailings dam overtopping and dam body collapse processes. It also discussed the leaked tailings flow evolution characteristics after dam failure, based on important parameters such as the dam-breach variation rules after dam break, flow velocity of the leaked tailings flow, particle deposition characteristics and submerged depth. Our research discovered that dam-breach development was mainly constituted by water current erosion-induced longitudinal downcutting and dam-breach slope instability-caused horizontal expansion. A large sand inrush amount resulted in a high downstream flow rate and large sediment depth after dam failure. In addition, when the sampling site was > 100 cm (model scale) away from the dam site, the discharged tailings flow size grading phenomenon was obvious during dam breach, and the particle size gradually decreased with increasing distance between the sampling characteristic sites and dam site. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169405
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, 400044, China; Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, 650093, China; School of Civil Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
Recommended Citation:
Tian S.,Dai X.,Wang G.,et al. Formation and evolution characteristics of dam breach and tailings flow from dam failure: an experimental study[J]. Natural Hazards,2021-01-01,107(2)