Method of dam construction of tailings pond in the later stage

Frontiers | Numerical Simulation on the Evolution of Tailings Pond Dam Failure Based on GDEM Method …

 · Steps 0 to 600 (0–6 s) are the initial stage of the accelerated collapse after the failure. During this stage, the tailings flow out of the tailings pond and diffuse rapidly westward, forming a fan-shaped collapse zone. Steps 600 to 5,500 (1–55 s) form the intermediate stage of the decelerated diffusion.

Long-term Risk of Tailings Dam Failure

Long-term Risk of Tailings Dam Failure. Figure 1a and 1b. Two NASA photos taken one-week apart reveal the massive scope of tailings mud discharges into Hazeltine Creek, Polley Lake, and Quesnel Lake, following failure of the Mount Polley Mine''s modern design tailings pond on August 4, 2014. Large tailings dams, which are built to contain ...

Tailing Disposal Methods and Tailings Dam Construction …

 · Tailings Dam Construction Design. of slime is likely to slide and cause the dam to break away. The procedure usually adopted in such cases is to separate the tailing into coarse sand and fines in a classifier, and to use the coarse product to build up the wall ; the remainder of the pulp is discharged into the interior of the dam.

Best Practices for Tailings Dam Design

 · Upstream tailings dams have been built for over a hundred years, and their design has evolved with improved construction practices and a better understanding of the potential for the static and dynamic liquefaction of tailings materials. They are best suited for arid climates where less water is stored in the impoundment, and in aseismic regions.

Tailings Storage Facilities and Dams

Geotheta completed the design of a rock buttress for an existing Tailings Storage Facility at Kroondal Mine near Rustenburg, North West. The rock buttress is for improving the Factor of Safety of the slopes to ensure compliance with the mine owner''s requirements. Geotheta is providing construction supervision for the rock buttress at Kroondal ...

Best Practices for Tailings Dam Design

The upstream construction method of tailings dams ( Figure 1 a) involves raising of dykes over the consolidated tailings impoundments i.e. upstream side ). In the construction of downstream ...

CHAPTER 11 DESIGN AND CONSTRUCTION OF TAILINGS DAMS

slide 1: Chapter 11 DESIGN AND CONSTRUCTION OF TAILINGS DAMS by Leo Casagrande Professor of the Practice of Foundation Engineering Harvard University and Bruce N. Mclver Partner Casagrande Consultants Arlington Mass. ABSTRACT Similarities are noted in the practices and problems of constructing dams to impound mine tailings fly ash and chemical ...

What are tailings dams? | IndustriALL

 · Tailings dams are used to store water and waste that come as by products from the mining process. It is estimated there are at least 3,500 tailings dams around the world. But as there are around 30,000 industrial mines, the number of tailings dams is likely to be much higher. Tailings dams can be huge in size, as big as lakes, and reach 300 ...

CHAPTER 11 DESIGN AND CONSTRUCTION OF TAILINGS DAMS …

slide 1: Chapter 11 DESIGN AND CONSTRUCTION OF TAILINGS DAMS by Leo Casagrande Professor of the Practice of Foundation Engineering Harvard University and Bruce N. Mclver Partner Casagrande Consultants Arlington Mass. ABSTRACT Similarities are noted in the practices and problems of constructing dams to impound mine tailings fly ash and chemical ...

Geotechnical Evaluations of a Tailings Dam for Use by a Molybdenum and Copper Mine Project in Southern Idaho

allow for more storage capacity of the tailings pond. Next is the centerline method, which is where the construction of each additional section of the mine is built directly on top of the starter dam. The third method for construction is the upstream method.

History of Tailings Dam Design

Mar 2011. Cristian Nieto. The concrete face rockfill dam (CFRD) is a type of dam widely constructed nowadays. The design "rules" for this type of …

History of Tailings Dam Design

 · In 1962, cycloned tailings for dam construction was first adopted on the Zambian Copperbelt, with the construction of the Lubengele Dam. In the mid 1960s, Earle Klohn, one of the founders of Klohn Crippen Berger, pioneered the design of centerline cycloned sand dams (see Figure 2 below). This was one of the first engineered tailings dam designs ...

Tailings Ponds 101 | Oil Sands Magazine

 · TAILINGS PONDS 101. Tailings ponds (or tailings storage facilities) play a critical role in storing solids from mined oil sands and managing water flows. These ponds are massive earth structures, initially constructed from overburden hauled from the mine site. Tailings ponds are normally located in a part of the lease that has little or no bitumen.

Mount Polley tailings pond remediation, six years later

 · Around 1 a.m. on August 4, 2014, a worker withdrawing water from the Mount Polley, British Columbia tailings pond dam was puzzled when he noticed he suddenly had no water.

Boliden to adjust tailings dam construction in Aitik

22 April 2022. AddThis. Print Email. Metals company Boliden is to invest SEK 5 billion over the next two years to strengthen current dam construction to meet the best international industry standards, and eventually change to a new dam construction method to ensure long-term disposal of tailings in Aitik, Sweden. Ongoing geotechnical ...

CN109487799B

The invention discloses a construction method of a reverse filter layer structure of a primary dam of a tailing pond, which comprises the following steps: firstly, building a gullet inverted filter structure of an upstream dam foundation of an initial dam; secondly, building ...

Tailings Ponds Dust Control | Global Environmental Solutions

The pond is generally impounded with a dam, and known as tailings impoundments or tailings dams. Tailing ponds are not uncommon, unfortunately. There exists an estimated 3,500 of these developments worldwide. A big part of the issue with tailings ponds, at least here domestically in North America, is that 39% of them fail.

Frontiers | Risk Evolution Study of Tailings Dam Failures Disaster …

 · Tailings pond engineering is a complex and extensive system with many risk factors that can trigger a dam failure. It is important to clarify the evolutionary relationships among the factors and to enhance effective management to reduce the risk of dam failure. In this paper, an effective and reliable method for analyzing the evolution of tailings pond dam failure risk by …

Tailings Dam Stability | SpringerLink

 · The construction of the dam, which is raised by the upstream method at a rate 0f 1–1.5 m/year, is simulated by the stage construction option in Plaxis. In each stage, new materials at predefined elevations are activated and the phreatic line is moved upwards according to its predefined location.

In Defence of Upstream Tailings Dam Construction

History of Tailings Dam Design - KCB

Tailings Pond Design

Tailings Pond Design. Site conditions, topography and environmental factors all play critical roles in determining the type and placement of a tailings storage facility. Considerations must be made for operational needs both while the mine is active and for continuing management after it''s closed. When weighing the pros and cons for a variety ...

Managing Tailings dams

 · The most popular form of construction of tailings dams is by sequentially raising the structure using the ''upstream'' method, which follows the level of the impounded tailings during the filling process. It also carries the biggest risk of failure. Inherent in low cost upstream construction are a number of specific hazards for dam stability.

Tailings dam

Tailings ponds can also be a source of acid drainage, leading to the need for permanent monitoring and treatment of water passing through the tailings dam. For instance in 1994 the operators of the Olympic Dam mine, Western Mining Corporation, admitted that their uranium tailings containment had released of up to 5 million m3 of contaminated water into the subsoil. …

Tailings Deposition Methods of Tailings

Multiple outfall deposition (spigots) is the most common method used to fill a surface storage facility. For conventional storage facilities, multiple spigots help to control the geometry and location of the supernatant pond within the facility. This helps to prevent the pond encroaching the embankment and reduces the risk of loss of freeboard.

CN103015437A

The invention relates to a method for pilling up an auxiliary dam of a tailings pond. The method comprises the following steps of: (1) pilling up a primary permeable dam or non-permeable dam first; (2) drawing ore to fill the piled-up dam, and piling up a sub-dam on a ...

Accidental Water Pollution Risk Analysis of Mine Tailings Ponds in Guanting Reservoir Watershed, Zhangjiakou City, China …

 · The previous approach is modified using multi-criteria analysis, dam failure models, and instantaneous water quality models, which are modified for application to multiple tailings ponds. The study area covers the basin of Gutanting Reservoir (the largest backup drinking water source for Beijing) in Zhangjiakou City, where many mine tailings ponds are located.

Merriespruit Tailings Dam Disaster

Method of Construction. As is typical with gold tailings in South Africa, the Merriespruit tailing dam was constructed using the "upstream semi-dry paddock" method, where a "daywall" perimeter is constructed and allowed to settle and dry out (typically carried out during the day and supervised) before slurry is placed in the "nightpan ...

Numerical Investigation on the Impact of Tailings Slurry on Catch Dams Built at the Downstream of a Breached Tailings Pond

 · Tailings storage facilities (TSFs) are known as a time-bomb. The numerous failures of TSFs and the heavy catastrophic consequences associated with each failure of TSFs indicate that preventing measures are necessary for existing TSFs. One of the preventing measures is to construct catch dams along the downstream near TSFs. The design of catch dams requires a …

MANAGEMENT OF TAILINGS: PAST, PRESENT AND FUTURE

The forms of tailings containment and method of construction and facility raising varies from region to region. Upstream construction, using tailings where possible, is widely employed in southern Africa, Australia and the south-west of the USA, which have ...

ESG briefing: Tailings dams

This construction method is useful where the overall footprint of the dam may have physical constraints. June 2019 Introduction to tailings dams Tailings facilities in the portfolio Approach to dam risk management at BHP The future There are a range of options for