DOI: 10.1007/s11069-020-04254-8
论文题名: Content analysis of dam break studies for tailings dams with high damage potential in the Quadrilátero Ferrífero, Minas Gerais: technical weaknesses and proposals for improvements
作者: de Paiva C.A. ; da Fonseca Santiago A. ; do Prado Filho J.F.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 104, 期: 2 起始页码: 1141
结束页码: 1156
语种: 英语
中文关键词: Dam break
; Emergency management
; Flood modeling
; Tailings dams
英文关键词: action plan
; dam failure
; flood damage
; flood frequency
; Newtonian fluid
; tailings dam
; Brazil
; Minas Gerais
; Quadrilatero Ferrifero
英文摘要: Tailings dams are civil structures that have an intrinsic potential risk of failure that, if poorly managed or neglected, can lead to severe societal, environmental, and economic damage. Studies of dam breaks make it possible to anticipate these damages and plan appropriate contingency actions for critical situations. In this context, the present work presents the analysis of 86 dam break studies of mining tailings dams in the important Brazilian mineral province called the Quadrilátero Ferrífero, or Iron Quadrilateral, in the state of Minas Gerais, Brazil. The analysis involved verifying whether the studies complied with legal requirements, met international guidelines, and addressed the minimum parameters reported as critical in the literature. We found that all studies analyzed present these components: hydrological studies, the definition of the failure mode and rupture hydrograph, and propagation of the flood wave and mapping of the effects of the rupture in the valley downstream of the dam structure. However, the dam break studies showed deficiencies, such as the weakness of the hydrological studies, lack of specific criteria on the volume of tailings that are supposed to mobilize in a possible rupture, and the failures to consistently model tailings as non-Newtonian fluids. These deficiencies found in the dam break studies present in Emergency Action Plan affect the predictive capacity of the rupture models and thus the accuracy of the flood maps they generate, negatively influencing preparation actions in an eventual emergency. In the absence of guidelines and the regulation about the minimal content of the dam breach studies, we suggest that a possibility for solving this deficiency in the short run is to have technically trained professionals from inspection and control agencies audit the content of the dam break studies. © 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/168457
Appears in Collections: 气候变化与战略
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作者单位: Graduate Program in Environmental Engineering (PROAMB), Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
Recommended Citation:
de Paiva C.A.,da Fonseca Santiago A.,do Prado Filho J.F.. Content analysis of dam break studies for tailings dams with high damage potential in the Quadrilátero Ferrífero, Minas Gerais: technical weaknesses and proposals for improvements[J]. Natural Hazards,2020-01-01,104(2)