Analysis of Safety and Risk Factors about the Tailings Dam in the Mental Mines

2012 ◽  
Vol 594-597 ◽  
pp. 299-302 ◽  
Author(s):  
Hai Yan Ju ◽  
Gui Qing Gao ◽  
Qiu Xiang Li ◽  
Jian Hua Li
Keyword(s):  
Risk Factors ◽  
Environmental Pollution ◽  
Potential Risk ◽  
Safety Management ◽  
Dam Break ◽  
Dam Failure ◽  
Tailings Dam ◽  
Metal Mines ◽  
Risk Source ◽  
At Home

Tailings dam is a potential risk source in the metal mines, once the tailings dam break, it will not only lead to tremendous loss in people’s lives and property, but also result in serious environmental pollution. Basing on the accidents of tailings dam failure at home, the dam failure causes are analyzed, some technology and management suggestions about decreasing dam-break accident are put forward, which provide reference for safety management to tailings dam.

Predict Research for Loss of Life Due to Dam Breach for Guangxi Luocheng Kama Reservoir

2011 ◽  
Vol 243-249 ◽  
pp. 3877-3882
Author(s):  
Rong Yong Ma ◽  
Xiang Chen ◽  
Lei Lei Yang ◽  
Xiao Qing Zhang
Keyword(s):  
Calculation Result ◽  
Dam Break ◽  
Dam Failure ◽  
Suitable Model ◽  
Actual Situation ◽  
Dam Breach ◽  
Loss Of Life ◽  
At Home

In this paper，the basic situation of Guangxi luocheng Kama reservoir and the potential dangers are introduced firstly, and then，different models often used to estimate the loss of life in dam failure at home and abroad are introduced and analysed.Based on the above, a suitable model for national actual situation is chosen to predict the loss due to this reservoir dam breach，and the severity according to the calculation result of assuming Kama reservoir dam-break is assessed. Finally, the relevant departments’s measures of rescuing and evacuating downstream masses etc. at danger in 2009 are proved to be correct，necessary and timely.

Risk Assessment Regarding Tailings Dam Break

2012 ◽  
Vol 433-440 ◽  
pp. 1864-1868
Author(s):  
Yong Bao Shu ◽  
Pei Liang Li ◽  
Zhong Xue Li
Keyword(s):  
Risk Assessment ◽  
Potential Risk ◽  
Quantitative Assessment ◽  
Social Economy ◽  
Dam Break ◽  
Space Diversity ◽  
Tailings Dam ◽  
Assessment Approach ◽  
Tailings Reservoir

An assessment approach in regard to tailings dam break would be analyzed and established in aspects of life, property and environment & resources loss in the essay. Tailings bam break hits local social economy varying with region as a result of particular and specialized space diversity. With the simple and practicable approach, it is quite reasonable to accomplish quantitative assessment of risk as well as review controlling priority to potential risk arising from tailings reservoir.

scholarly journals Three-dimensional numerical simulation of mud flow from a tailings dam failure across complex terrain

2019 ◽  
Author(s):  
Dayu Yu ◽  
Liyu Tang ◽  
Chongcheng Chen
Keyword(s):  
Stokes Equations ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Dam Break ◽  
Dam Failure ◽  
Tailings Dam ◽  
In Situ Investigation ◽  
Impact Area ◽  
The Impact ◽  
Mud Flow

Abstract. A tailings dam accident can cause serious ecological disaster and property loss. Simulation of a tailings dam accident in advance is useful for understanding the tailings flow characteristics and assessing the possible extension of the impact area. In this paper, a three-dimensional (3-D) computational fluid dynamics (CFD) approach was proposed for reasonably and quickly predicting the flow routing and impact area of mud flow from a dam failure across 3-D terrain. The Navier–Stokes equations and the Bingham-Papanastasiou rheology model were employed as the governing equations and the constitutive model, respectively, and solved numerically in the finite volume method (FVM) scheme. The volume of fluid (VOF) method was used to track the interface between the tailings and air. The accuracy of the CFD model and the chosen numerical algorithm were validated using an analytical solution of the channel flow problem and a laboratory experiment on the dam break problem reported in the literature. In each issue, the obtained results were very close to the analytical solutions or experimental values. The proposed approach was then applied to simulate two scenarios of tailings dam failures, one of which was the Feijão tailings dam that failed on 25 January 2019, and the simulated routing coincided well with the in situ investigation. Therefore, the proposed approach does well in simulating the flow phenomenon of tailings after a dam break, and the numerical results can be used for early warning of disasters and emergency response.

scholarly journals A copula based representation for tailings dam failures

4open ◽  
2020 ◽  
Vol 3 ◽  
pp. 12
Author(s):  
Laura Maria Canno Ferreira Fais ◽  
Verónica Andrea González-López ◽  
Diego Samuel Rodrigues ◽  
Rafael Rodrigues de Moraes
Keyword(s):  
Bayesian Estimation ◽  
Dam Break ◽  
Maximum Distance ◽  
Dam Failure ◽  
Tailings Dam ◽  
Copula Models ◽  
Dam Breaks ◽  
A Value ◽  
Dam Failures

In this article, we model the dependence between dam factor and D max, where dam factor is an indicator of risk of a tailings dam failure, which involves the height H of the tailings dam, the volume of material housed by the tailings dam VT and the volume dispensed by the tailings dam, VF, when the dam breaks. And, Dmax is the maximum distance traveled by the material released by the tailings dam, after the collapse. With the dependence found via copula models and Bayesian estimation, given a range of dam factor, we estimate the probability of the released material to exceed a certain threshold. Since the dam factor involves the released volume VF (unknown before the dam break), we present a naive way to estimate it using VT and H. In this way, it is possible to estimate the dam factor of a tailings dam and with such a value to identify the probability of the tailings dam to show a Dmax that exceeds a certain threshold.

The Economic Loss Estimate of Dam Break Based on 2D Dam Break-Wave Numerical Simulation

2013 ◽  
Vol 405-408 ◽  
pp. 2457-2462
Author(s):  
Zhao Wei Shen ◽  
Cun Hong Pan ◽  
Sui Gao Ye ◽  
Hai Yan Lu ◽  
Li Hui Wang
Keyword(s):  
Regional Economy ◽  
Safety Management ◽  
Economic Loss ◽  
Dam Break ◽  
Dam Failure ◽  
Dam Safety ◽  
Flux Vector ◽  
Flux Vector Splitting ◽  
Loss Estimate ◽  
2D Numerical Model

A 2D numerical model based on Boltzmann equation and an unstructured FVM grid with a kinetic flux vector splitting (KFVS) scheme was developed to simulate dam break-wave. As an example, propagation of the dam-break wave of one reservoir dam at Yuhang District of Hangzhou in Hangzhou was simulated by this model. Using regional economy, population, and geography data of 2008, the economic loss caused by dam failure was evaluated. The result shows that total economic loss is about 20% of the GDP in Yuhang, which is close to the conclusion of some existing researches. It is foreseeable that this method would to be used more widely in Zhejiang for dam safety management.

Vulnerability Analysis of Tailings Dam Failure Based on DEMATEL-ISM

2021 ◽  
Author(s):  
Jiahe Wang Wang ◽  
Binbin Zheng ◽  
Jiahe Wang
Keyword(s):  
Risk Factors ◽  
Influence Factor ◽  
Mutual Influence ◽  
Construction Material ◽  
Evaluation Index System ◽  
Slope Instability ◽  
Dam Failure ◽  
Tailings Dam ◽  
Reservoir Water ◽  
Flood Discharge

Abstract To effectively reduce the risk of tailings dam failure accident, the vulnerability risk of tailings dam failure was systematically analyzed by using the analysis method of Decision-making Trial and Laboratory (DEMATEL) combined with the Interpretative Structural Modeling Method (ISM). A dam failure impact factor evaluation index system was constructed, and the DEMATEL method was used to study the mutual influence relationship between risk factors and determine the key risk factors and outcome factors; the ISM method was used to divide the hierarchy of each influence factor and determine the comprehensive influence relationship of risk factors, and then the tailings dam failure risk evolution model was established. The results show that: whether the dam construction material meets the specification (X6), insufficient safety superelevation (X11), the reservoir water level (X16), and the flood discharge capacity of the flood discharge facility (X17) are direct factors, which directly lead to the occurrence of dam failure; the professional quality of safety personnel (X3), the depth of the infiltration line (X13) and a series of other factors are intermediate factors, which conduct and accumulate the risk; slope instability (X25) and the seismic intensity (X34) are essential causal factors. The key control and prevention of the essential factors can help to reduce the risk of dam failure from the root. The results of the study can provide a better perspective and direction for reducing the occurrence of dam failure accidents.

Premature Arterial Disease Associated with Familial Antithrombin III Deficiency

1990 ◽  
Vol 63 (01) ◽  
pp. 013-015 ◽  
Author(s):  
E J Johnson ◽  
C R M Prentice ◽  
L A Parapia
Keyword(s):  
Risk Factors ◽  
Venous Thromboembolism ◽  
Potential Risk ◽  
Antithrombin Iii ◽  
Arterial Disease ◽  
Coagulation System ◽  
Early Age ◽  
Arterial Thromboembolism ◽  
Potential Risk Factors ◽  
Antithrombin Iii Deficiency

SummaryAntithrombin III (ATIII) deficiency is one of the few known abnormalities of the coagulation system known to predispose to venous thromboembolism but its relation to arterial disease is not established. We describe two related patients with this disorder, both of whom suffered arterial thrombotic events, at an early age. Both patients had other potential risk factors, though these would normally be considered unlikely to lead to such catastrophic events at such an age. Thrombosis due to ATIII deficiency is potentially preventable, and this diagnosis should be sought more frequently in patients with arterial thromboembolism, particularly if occurring at a young age. In addition, in patients with known ATIII deficiency, other risk factors for arterial disease should be eliminated, if possible. In particular, these patients should be counselled against smoking.

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