Proceedings Tailings and Mine Waste 2015 Vancouver, BC, October 26 to 28, 2015 fits the cyclic triaxial test data quite well. In order to better represent in situ stress conditions, as shown by the dotted line of Figure 3, the model was also calibrated by correcting the triaxial
extension loading in triaxial test conditions, can be significant. NUMERICAL ANALYSIS, DESIGN OF DAMS (NATURAL SOILS, TAILINGS) AND DEEP EXCAVATIONS Fig. 1 Rotation of main stress directions along the slip surface THE SOLUTION Using GDS Instruments automated triaxial hybrid apparatuses (in the GEOTEKO laboratory), compression loading and
However, in these test results on tailings, had a minor effect on G max (for the range of considered) The range of G max for the tailings is in agreement with values provided by Troncoso and Verdugo (1985) for copper tailings that were isotropically consolidated to an effective stress of 196 kPa and subjected to cyclic triaxial testing, and
This paper presents the findings from undrained cyclic triaxial shear testing conducted on saturated paste rock specimens reconstituted such that the tailings would just fill the void spaces between the coarse particles of the skeleton. and Henkel, D.J. 1962. The measurement of soil properties in the triaxial test. Ishihara, K
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use with aggressive pore fluids that can be associated with mine tailings. Another optional addition to the system can be to carry out low hydraulic gradient permeability tests. Traditionally these are difficult to control due to the very fine tolerances between the sample inlet pressure and outlet pressure of the permeability test. Using
and undisturbed mine tailings. Moriwaki et al. (1982) carried out the response of copper mine tailings using eld and laboratory tests. Vick (1983) investigated the cyclic strength of the different mine tailings. Peters and Verdugo (2003) observed that, under the same void ratio, the cyclic resistance of mine tailings
Example of Triaxial Test Results. For more information Contact Us in the Cape Town Office Laboratory. Tailings, Mine Backfill, Slurry Process Test Work, Process Engineering, Specialist Engineering, Marine Coastal Engineering, Site Services and Plants Products.
Study on static and dynamic strength characteristics of tailings silty sand and its engineering researches were conducted on the static and dynamic strength characteristics of the tailings silty sand of No. 4 tailings reservoir in De xing copper mine. The mechanical parameters of the tailings silty sand by triaxial test are fitted
Technical Services Manager Mine, ENGIE Tailings, Hazelwood, Cyclic Triaxial Test. Introduction Australia is the fourth largest coal producing country in the world. Unlike many other states, the major coalfields of Victoria contain brown coal, a fuel generally unsuitable for combustion without specialized
Test data on uncompacted tailings sands which the practicing engineering could use to obtain a preliminary estimate of cyclic strength parameters are compiled and reviewed. Data from 20 tailings and 13 nontailings materials is presented for comparison purposes. Closure to Cyclic Triaxial Strength of Mine Tailings by Vinod K. Garga
Uniaxial compression test of frozen tailings. Yang et al. (2010) carried out a series of triaxial compression tests on artificial frozen sand at a temperature of The test tailings were sampled from the processing mill of Lala Copper Mine (Sichuan province, China). The Lala Copper Mine is the biggest open pit copper mine in southwest China.
Case of Study on Particle Shape and Friction Angle on Tailings . Juan M. Rodriguez and Tommy Edeskr . empirical relations based on soil material compared with triaxial test results on the tailings In this study has tailings from mine Aitik outside Gllivare in northern Sweden Bolidens
Testing of the Homestake Mine Tailings Deposit Donald R. East Managing Partner, Knight Piesold and Co., Denver, Colorado SPT's and 9 laboratory triaxial tests as well as a well pump test. The study included a detailed geo Test results were utilized to determine the stability of an upstream
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.
Shear Behaviour of Oil Sand Fine Tailings in simple shear and triaxial devices A thesis submitted to the Faculty of Graduate and Postdoctoral Affairs Figure 2 31.Normalised behaviour using idealised triaxial compression test data for homogeneous clay and
ASSESSMENT OF CRITICAL STATE SHEAR STRENGTH PROPERTIES OF COPPER TAILINGS * Erica Elice Saloma Uy 1 and Mary Ann Q. Adajar 2 It is the interest of this study to assess the possibility of using mine tailings, specifically copper tailings, as a The consolidated drained (CD) triaxial test or S Test (Slow Test) was based on the British
A laboratory database of triaxial compression test results was collected to examine the use of strength ratios for liquefaction analysis. Specifically, the database was used to (i) validate the yi A laboratory database of triaxial compression test results was collected to examine the use of strength ratios for liquefaction analysis
This study is focused on developing a method to predict the dynamic behavior of mine tailings dams under earthquake loading. Tailings dams are a by product of coal mining and processing activities. Mine tailings impoundments are prone to instability and failure under seismic loading as a result of the mechanical behavior of the tailings. Due to the existence of potential seismic sources in
STABILITY INVESTIGATION OF ETI COPPER MINE TAILINGS DAM USING FINITE ELEMENT ANALYSIS submitted by ESRA NUR TANRISEVEN in partial fulfillment of the requirements for the degree of Master of Science in Mining Engineering Department, Middle East Technical University by,
Nov 10, 2011A 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.
duced coarse iron and fine iron tailings from the Yuhezhai iron mine were about 6570 and 70 wt%, respectively, and the concen trations of the coarse copper and fine copper tailings from the Bahuerachi copper mine were about 72 and 60 wt%. Test Methods A series of conventional laboratory experiments were carried out to
Cyclic Strength of Undisturbed Mine Tailings Kenji Ishihara Professor of Civil Engineering, University of Tokyo, Bunkyo ku, Tokyo, Japan cut out of the long sample to fit the triaxial test apparatus, still contain several layers. The application of vertical cyclic load to such a highly stratified specimen in the triaxial
o Brief overview of direct shear test o Determine soil shear strength parameters from triaxial tesng Unconsolidated Undrained Consolidated Undrained o Triaxial test setup and behaviour o Use of results in engineering pracce o Examples of triaxial test