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Permeability of mine tailings measured in triaxial cell

The execution of permeability tests using a triaxial cell makes it possible to eliminate the uncertainties that characterize tests performed using conventional equipment. This stone contains the results of 48 tests carried out on three materials recovered from tailings of Riotinto mines (Spain). The equipment involved a modified triaxial system to facilitate the execution of permeability tests

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Permeability of mine tailings measured in triaxial cell

Request PDF Permeability of mine tailings measured in triaxial cell The execution of permeability tests using a triaxial cell makes it possible to eliminate the uncertainties that characterize

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(PDF) Mechanical Behavior of Uniformed Tailings Material

Mechanical Behavior of Uniformed Tailings Material in Triaxial Tests . Article (PDF Available) in Electronic Journal of Geotechnical Engineering 22(06):1717-1730 · March 2017 with 102 Reads How

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Geotechnical Properties of Mine Tailings Journal of

Geotechnical Properties of Mine Tailings Liming Hu, Ph.D., (VJTech, Reading, Berkshire, U.K.) was used to conduct the consolidated undrained (CU) and consolidated drained (CD) triaxial compression tests on the tailings according to ASTM standard D4767-11 and D7181-11, respectively

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Geotechnical Properties of Mine Tailings

Geotechnical Properties of Mine Tailings Liming Hu, Ph.D., A.M.ASCE1; Hui Wu2; (CU) and consolidated drained (CD) triaxial compression tests on the tailings according to ASTM standard D4767-11and D7181-11, respectively (ASTM 2011c, b). The consolidation stresses were 200, 400, and 800 kPa. The specimens for the triaxial tests were 3.91 cm in diameter and 8 cm in height, and the

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Triaxial Test Work Capability Paterson & Cooke

Mine tailings vary significantly depending on the commodity being mined, the orebody and the processing method. Unlike natural soils, mine backfill usually has a high amount of milled ultrafine particles that change the behaviour of the mixture and therefore also the testing requirements. It is important to be able to adjust test campaigns and procedures as data becomes available, to ensure

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Estimation of the Undrained Strength Characteristics of

soil (Seed, 1987). For clean sands, triaxial tests have been used to estimate the residual strength. Or, for that matter, any suitable test method may be used, including rotational shear, direct simple shear or the vane test (Poulos, 1988). When applying the FVST to mine tailings, the rotation of the vane must be rapid enough to allow for

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Laboratory Investigation of the Resistance of Tailings and

10/11/2011· A number of cyclic triaxial tests were carried out on mine tailings and natural sediment samples under undrained conditions to investigate their resistance to cyclic loading. The tests were performed on more than 100 samples with a cyclic shear stress ratio ranging from 0.10 to 0.40 under varying void ratio and the same confining pressure. It was observed that the axial strain and excess

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Laboratory Investigation of the Resistance of Tailings and

Laboratory Investigation of the Resistance of Tailings and Natural Sediments to Cyclic Loading Africa M. Geremew • Ernest K. Yanful Received: 5 January 2011/Accepted: 2 November 2011 Springer Science+Business Media B.V. 2011 Abstract A number of cyclic triaxial tests were carried out on mine tailings and natural sediment samples under undrained conditions to investigate their resistance to

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TAILINGS AND MINE WASTE 2019 LIST OF ACCEPTED ABSTRACTS

TAILINGS AND MINE WASTE 2019 LIST OF ACCEPTED ABSTRACTS (As of July 1, 2019) Muhammad Abbas Stantec Application of the Mine Waste Design Guidelines in the Elk Valley Coal Field, British Columbia, Canada. • Lesley Town • Andrew Bidwell . David Accadia Golder Associates Refinement of central thickened discharge tailings facilities during operation. David Accadia Golder

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Shear Behaviour of Oil Sand Fine Tailings in simple shear

Shear Behaviour of Oil Sand Fine Tailings in simple shear and triaxial devices A thesis submitted to the Faculty of Graduate and Postdoctoral Affairs

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Liquefying-damage of mine tailings dams in earthquakes

By using triaxial tests, the relationship of shear stress with shear strain and the Mohr’s circle and related fracturing line of the tested tailings dam materials can be found (see Figure 4). (a) (b) Figure 4 Triaxial compression tests of tailings dam materials; (a) shear stress-shear strain relationship; (b) Mohr’s

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THESIS EFFECT OF TAILINGS COMPOSITION ON THE SHEAR

tailings “just fillintered-particle” void space of the waste rock (R opt) prepared at the maximum void ratio of waste rock alone. Triaxial compression tests were conducted on waste rock, tailings, and co-mixed specimens at effective confining stresses (σʹ c) of approximately 5, 10, 20, and 40 kPa. ow L σʹ

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A Multi-Stage Triaxial Test for Cemented Paste Backfill

This stone mainly focuses on the experimental development of a shear failure criterion using just one multi-stage triaxial test of a CPB consisting of carbonate sand with stone size ≤ 250 μm instead of mine tailings, Portland cement as a binder and tap water. 1. INTRODUCTION

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Technical note: Fundão Mine tailings dam failure Ground

The Fundão Mine Tailings Dam (figure 1) was constructed to retain sand and slimes tailings that were produced from the beneficiation of iron ore. Transported in slurry form, the sand tailings comprised sand and silt-sized particles, which generally allowed for rapid water drainage following their deposition. The sands deposits were, however, typically loose and uncompacted, due to their

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Dynamic Properties and Influence of Clay Mineralogy

A series of stress-controlled and undrained cyclic triaxial tests were conducted on mine tailings to investigate their dynamic properties and the influence of clay mineral types on their cyclic strength. The tests were performed on specimens with a cyclic shear stress ratio ranging from 0.10 to 0.40 under the same confining pressure. It was observed that the axial strain, excess pore water

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Laboratory experiments on the determination of porosity of

43 laboratory triaxial shear test, beneath a slope, behind a retaining wall, or within an earth or 44 tailings dam) are largely controlled by their density and porosity (Sadrekarimi, 2013). For 45 example, Figure 1 illustrates the strong effect of porosity on the shearing behavior and the

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The GDS Triaxial Automated System (GDSTAS)

The GDS Triaxial Automated System (GDSTAS) soft, high water content materials such as mine tailings or paste back fill. Essentially the system is a modified CRS type system (described previously). The main modificationis to the sample retaining setup, in that slurries are placed into the cell in very different ways to normal cohesive samples. The slurry can in effect be poured into the

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STABILITY INVESTIGATION OF ETI COPPER MINE TAILINGS DAM

stability investigation of eti copper mine tailings dam using finite element analysis a thesis submitted to the graduate school of applied and natural sciences of middle east technical university by esra nur tanriseven in partial fulfillment of the requirements for the degree of master of science in mining engineering september 2012 . ii approval of the thesis: stability investigation of eti

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THICKENED TAILINGS: RHEOLOGICAL AND GEOTECHNICAL

THICKENED TAILINGS: RHEOLOGICAL AND GEOTECHNICAL CHARACTERISTICS JAMIE SPIERS Methods for Treatment of Mine Tailings 16 -17 November 2010. Contents Thickened tailings Key Drivers and Processes Rheological characteristics Overview Measurements Geotechnical Characteristics Gravimetric Geomechanical Tailings-Water Relationships Esperanza Tailings Facility Case Study. Thickened Tailings

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