Evaluation of Safety of Tailings Dams

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Published by BiTech Publishers Ltd. in Vancouver, Canada .

Written in English

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The Physical Object
Number of Pages200
ID Numbers
Open LibraryOL26212103M
ISBN 100-921095-53-8, 0-921095-53-8

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Their safety, for the protection of life, the environment and property, is an essential need in today's mining operations. These factors and the relatively poor safety record revealed by the numbers of failures in tailings dams, have led to an increasing awareness of the need for enhanced safety.

Evaluation of Safety of Tailings Dams Hardcover – January 1, by Mashi Szymanski (Author) See all formats and editions Hide other formats and editions. Price New from Used from Hardcover, January 1, "Please retry" $ Author: Mashi Szymanski. 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 ofFile Size: KB. The majority of currently available dam safety guidelines do not account well for the specifics of tailings dams.

In the guidelines commonly used in Canada, tailings dams are addressed alongside water retention (conventional) dams. This results in an user-unfriendly, and potentially unsafe and/or inappropriate, treatment of safety aspects specific to tailings dams.

A number of guidelines Cited by: 2. Manual on Tailings Dams and Dumps. () Tailings Dam Safety – Guidelines. () Tailings Dams – Design of Drainage. () Tailings Dams and Seismicity – Review and recommendations. () Tailings Dams – Transport, Placement and Decantation. () Tailings Dams and the Environment – Review and.

“tailings dam” encompasses embankments, dam walls or other impounding structures, designed to enable the tailings to settle and to retain tailings and process water, which are constructed in a controlled manner.

A tailings impoundment is the storage space/volume created by the tailings dam or dams where tailings are deposited and stored.

to Evaluation of Safety of Tailings Dams book the tailings water in antimony, arsenic and mercury. The dam has not been designed with any seismic safety criterion and with no study of local or regional seismicity.

In the most-likely failure scenario, the initial runout of tailings would cover 41 kilometers with significant impact on the Evaluation of Safety of Tailings Dams book de Volta Grande do Xingu indigenous land.

A tailings dam is typically an earth-fill embankment dam used to store byproducts of mining operations after separating the ore from the gangue.

Tailings can be liquid, solid, or a slurry of fine particles, and are usually highly toxic and potentially tailings are often used as part of the structure itself. Tailings dams rank among the largest engineered structures on earth. The project objective is to increase the safety standards in regards to tailing facilities by creating a tool that will provide guidance on environmental impacts from tailings dams.

By implementing Stings, it will provide extended monitoring and an early warning system for the identification of risks. Tailings are the waste resulting from the extraction of minerals and metals. Tailings can be disposed in various ways but the most common practice is to deposit them as slurry in impoundments behind dams.

This form of tailings storage facility is the focus of this paper, and the term TSF is used hereafter to refer to tailings dams.

Tailings dams quantitative risk assessment Nov 21st, Tailings dams quantitative risk assessment has to rely on proper evaluation of consequences and goal is to be able to economically and swiftly prioritize a portfolio of dams.

Typically, tailings are pumped as a slurry to a storage dam, following similar engineering principles to water storage and hydroelectric dams. That is, a tailings dam has to be designed and engineered to address risks such as flooding (e.g.

1-in or 1-in year storm events), seismic events (especially in some parts of the world), geology. The failure of a number of waste dumps and tailings dams over the last decade has directed public attention to the potential hazard and severe environmental and safety impact created by mine tailings disposal, and has brought concerns on the need for more appropriate design, construction and management of tailings.

Ina tailings impoundment near Stava in northern Italy collapsed, killing people and causing significant economic losses.

The failure of the two tailings dams resulted in the release of approximatelym 3 of liquefied tailings [45, 74].When the tailings dams broke, the upper dam was over 34 m high, and the lower dam was 25 m high.

The consequences of tailings dam breaks are disastrous; although various factors can often result in tailings dam damage, the main cause is poor management.

To reduce human supervision errors and ensure that real-time early warnings alerts are sent for any risks, 22 evaluation indexes that affect dam breaks were set up based on inherent and frequency risk.

is being tested and applied in tailings dams in the mining region of Cajamarca in Peru. The failure rate of tailings dams over the last one hundred years is estimated to be more than two orders of magnitude higher than the failure rate of conventional water retention dams (reported to be %).

ICOLD (International Commission on Large Dams). Tailings Dams, Risk of Dangerous Occurrences, Lessons Learnt from Practical Experiences. Bulletin ICOLD. Improving Tailings Dam Safety, Critical Aspects of Management, Design, Operation and Closure.

Bulletin International Commission on Large Dams-United Nations Environmental. Tailings Dam v’s Tailings Storage Facility (TSF) 1 Past Lessons Learnt 1 Sustainable Use of Dams for Tailings Storage 2 The need for these Guidelines 2 Australian Regulations and Guidelines 3 Consultations 4 Procedure for Tailings Dam Life Cycle Management 4 Definitions 6 Key Management Considerations 9.

Barry A. Wills, James A. Finch FRSC, FCIM,in Wills' Mineral Processing Technology (Eighth Edition), Tailings Dams. The design, construction, and operation of tailings dams is a major consideration for most new mining projects, as well as for many existing operations (Vick, ).It is economically advantageous to site the impoundment close to the mine, but this imposes.

The tailings dams of Gura Roşiei and Valea Săliştei are located in the Wstern part of the area, on the left bank of Abrud River, the tailings dam of Gura Roşiei, and, respectively, the tailings dam of Valea Săliştei in the valley of Sălişte Creek.

They have a surface exceeding 40 hectares and they store a total volume of waste of safe tailings dams to be designed and constructed • However, the rate of tailings dam failures has averaged a year during the past 30 years – this knowledge and experi ence has not been applied in every case.

• In order to improve the situation the International Commission on Large Dams with the United Nations Environmental Programme. Mining Tailings Storage: Safety is no accident, was prompted by tailings dams disasters and rising global concerns about the safety, management and impacts of storing and managing large volumes of.

There are approximately dams in Sweden. About hydropower dams and 15 tailings dams are high dams according to ICOLD´s definition. I.e. the height from the foundation level to the crest is 15 meters ore more.

The estimated numbers of hydropower dams that are high consequence dams according to RIDAS2 are about The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings (coarse and fine).

Safer tailings storage facilities (TSFs) - or tailings dams - can be achieved when mine owners, contractors and engineering consultants work closely together. Improving the Safety of Tailings Dams This website is currently showing content in English. Satellite imagery has led to the realization that tailings impoundments are probably the largest man-made structures on earth.

Their safety, for the protection of life, the environment and property, is an essential need in today's mining operations. These factors and the relatively poor safety record revealed by the numbers of failures in tailings dams, have led to an increasing awareness of.

Dam safety. Tailings dams > Design and construction. Tailings dams > Maintenance and repair. Dams > Maintenance and repair. Tailings embankments > Design and construction.

Bibliographic information. Publication date Series Bulletin ; Note Summary in French. ISBN construction, and operation of new dams and in the safety evaluation of existing dams. As early asfollowing the failure of the St. Francis Dam, the State of California enacted a dam safety program.

Subsequently, other dam failures causing loss of life and property have prompted additional legislation on state and national levels. Initially, numerical analyses are performed for three typical types of tailings dams to obtain the potential modes of slope instability by determining the corresponding factors of safety under static conditions.

Subsequently the dynamic distress of tailings dams is thoroughly investigated in terms of inertial accelerations developed. Evaluation of safety of tailings dams Hardcover – Jan.

1 by Maciej B Szymanski (Author) See all formats and editions Hide other formats and editions. Amazon Price New from Used from Hardcover, Jan.

1 "Please retry" — — — Hardcover — Customers also viewed these products. Page Author: Maciej B Szymanski. Tailings dams differ from water supply reservoir dams in two significant ways – dam design life, and dam construction design.

1 Center for Science in Public Participation, North Church Avenue, Bozeman, MTPh.email. Tailings dams currently have a higher profile within the mining industry compared to any other previous period.

HUESKER studies each tailings dam project individually and offers dedicated analysis and embankment stabilization design and supply capabilities, through the incorporation of superior flexible reinforcement geogrids and geotextiles.

Safety Guidelines to Mining Dams. by the Canadian Dam Association (CDA) does not prescribe procedures for conducting tailings dam breach analyses, but is rather limited to identifying “some specific issues that should be considered during the design and safety evaluation of mining dams.

The impedance ratio and the depth of foundation have significant effect on the seismic factor of safety of tailings dams. The results from the proposed method are well compared with the existing. ICMM and its members are committed to driving safety and environmental improvements through the mining industry.

After the tragic failure of the Samarco tailings dam, ICMM consulted with its member companies to determine how best to minimise the risk of a recurrence of such a catastrophic dam failure.

Benckert A () Tailings dam safety in Sweden. Proc. International Symposium on Major Challenges in Tailings Dams 71st Annual Meeting of the International Commission on Large Dams (ICOLD), 15 JuneMontreal, Canada–45 Google Scholar.

for tailings dams. This will continue to provide a coherent and thorough technical basis for design, operation and closure of tailings dams for the mining/minerals processing industry. Tailings dams comprise structures to aid the storing of unwanted waste from a mineral or manufacturing process.

Dam safety monitoring is a worldwide statutory requirement. Continuous evaluation and monitoring of a dam is necessary for the health and safety of dams and the people who depend on these important structures.

The early detection of potential failure of reservoirs and tailings dams is critical to the overall health and safety of the dam and. Many tailings dams come within the scope of the Mines and Quarries (Tips) Act ofbut not all do so. There have been a number of incidents affecting safety and the hazard posed by the sudden release of tailings is examined in the context of the safety of British tailings dams.

This book provides a comprehensive approach to address the need for improvements in the design of tailings dams, its management and the regulation of tailings management facilities to reduce, and eventually eliminate, the risks of failure of existing and future facilities.

Application of Dam Safety Guidelines to Mining Dams, the MAC Guide to the Management of Tailings Facilities, and the GBA Proposed Best Practices for Engineer of Record (EOR) for Tailings Dams.

Other guidance and standards for tailings management are being developed by .Safety of Existing Dams: Evaluation and Improvement. Washington, DC: The National Academies Press. doi: / please consider the following text as a useful but insufficient proxy for the authoritative book pages.

EMBANKMENT DAMS 7 Embankment Dams TYPES OF DAMS AND FOUNDATIONS Embankment-type dams have been classified in a.a solution to various problems concerning the safety of tailings dams. However, in most countries tailings dams remain largely outside the scope of dam safety regulations in force for water retention dams.

The International Commission on Large Dams - ICOLD () provides various recommend.

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