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Yet tailings dam failures events resulting in the escape of tailings and/or water from the tailings dam have occurred more frequently than water supply dam failures Even with the obvious requirement for long term stability the number of tailings dam failures since 1970 has significantly exceeded the failures for dams used for water supply
·Dewatering tailings to higher grades than paste produces a stable deposit that typically does not require retention dams and is called a dry stack A proposal of different dewatering techniques applied in the fine tailings produced after final desliming phase obtained from the treating of phosphatic ores is the main objective of this work The dewatering
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·Tailings ponds are composed of residual mining sediments and represent a high risk due to their mechanical instability A tailings dam break can cause extensive damage to the safety of downstream residents and the surrounding environment This paper introduces a collapse of the tailings dam that occurred in Tonglüshan Daye Hubei China To examine the
·Tailings dams have been built since 3000 BCE and despite the advancement of construction methods mainly in the second half of the 21st century their ruptures were still recorded The main direct impacts are related to the loss of human lives impairment of physical structures and changes in water quality In this review different dam failure
·1 Introduction Breakages are the most common accident faced by tailings dams [] The consequences of tailings dam failures are often catastrophic []; they can cause huge environmental and human losses are a serious threat to the life and property of downstream residents and are a major source of environmental pollution that cause secondary disasters [3 4]
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The stress field and the seepage field in tailings reservoir change leading to the instability of the dam The following reasons explained for the resulting failure 1 the seepage field directly induces instability of the tailings dam seepage and internal erosion ; 2 the instability of the tailings dam foundation poor foundation conditions ; 3 flooding that causes the tailings dam
·Tailings dam failures have received significant attention in recent years due to the catastrophic downstream consequences as evidenced by the 2019 Feijão disaster in Brazil and numerous precedents
·The dashed black line shows approximation of dam fill and tailings extent for an upstream tailings facility and does not represent actual delineated extents of fill and tailings
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·An Overview of Conventional Tailings Dam Geotechnical Failure Mechanisms Luke Clarkson1 & David Williams1 Received 16 October 2020 /Accepted 8 January 2021 # Society for Mining Metallurgy & Exploration Inc 2021 Abstract The intent of this paper is to provide overview context to allow broader understanding of conventional tailings dam
In a time of changing rainfall patterns and in the light of recent tailings dam failures there is closer environmental scrutiny for proposed tailings dam construction or expansion Therefore the elimination of the traditional tailings dam could provide both environmental and cost benefits to an operation One method to dewater tails is using pressure filtration to achieve lower moistures
·This portal brings together all of the disclosures that mining companies have made about their tailings storage facilities It gives communities investors regulators and the media unprecedented access to information about mine Global Tailings Portal launched in January 2020 is a free searchable database with detailed information on more
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·Design and Evaluation of Tailings Dams 2 More recently concerns have been raised about the stability and environmental performance of tailings dams and impoundments Stability concerns are raised in part by the use of tailings material in tailings dams/embankments; to mitigate these concerns such embankments often rely on a certain amount of
·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
·for tailings 6 Figure 5 Hyperbaric filters COMPARISON WITH MATEC FILTER PRESS • The running costs of one vacuum filter double the costs of a filter press because of the ceramic discs • Vacuum filters require continuous maintenance Costs are 50% more than filter press • Vacuum filters need high quantity of fresh wa
·The design of tailings dams has improved significantly in recent decades due to experience and advances in applied research However there are still several environmental and geomechanical uncertainties associated with the response of these structures Failures on the wall of tailings dams are well documented where the most common causes are related to the
·The generated tailings in the mining sector are mostly disposed through conventional tailings management systems storing in tailings dams Due to the depletion of global ore deposits and new environmental rules it is inevitable to consider new tailings management systems including recycling and reuse
·The tailings dam system is complex and the dam structure changes continuously over time which can make it difficult to identify key hazards of failure and characterize the accident formation
