TY - GEN
T1 - Centrifuge Modeling of Mine Tailings and Waste Rock Co-disposal, Consolidation and Dynamic Loading
AU - Antonaki, Nonika
AU - Abdoun, Tarek
AU - Sasanakul, Inthuorn
N1 - Funding Information:
The authors appreciate the support of Golder Associates Ltd.
Publisher Copyright:
© 2018, Springer International Publishing AG.
PY - 2018
Y1 - 2018
N2 - Tailings from a planned copper-gold mining project located at the earthquake-prone Andean region of South America were obtained from the metallurgical pilot plant in order to perform centrifuge tests at the Center for Earthquake Engineering Simulation (RPI). Consolidation and shaking table tests were conducted to evaluate the properties and liquefaction potential of mildly sloped consolidated mine tailings. A gentle slope at the surface of a tailings impoundment can significantly add to the stored volume. In the field, the tailings are thickened and hydraulically deposited into the containment structure in layers. In the centrifuge, tailings were prepared in layers and consolidated, thus allowing instrumentation of each layer before consolidation of the complete impoundment. Due to long consolidation time, large settlement and clear signs of liquefaction after a few cycles of dynamic loading, the need for improvement arose. One of the alternative management methods that can improve physical stability and geochemical properties is co-disposal of mine tailings and waste rock. In this study, co-mixing of the materials at a specified ratio of dry mass (waste rock to tailings) prior to disposal was examined. The behavior was compared to that of tailings alone with respect to consolidation rate, settlement accumulation, slope stability and response to dynamic loading.
AB - Tailings from a planned copper-gold mining project located at the earthquake-prone Andean region of South America were obtained from the metallurgical pilot plant in order to perform centrifuge tests at the Center for Earthquake Engineering Simulation (RPI). Consolidation and shaking table tests were conducted to evaluate the properties and liquefaction potential of mildly sloped consolidated mine tailings. A gentle slope at the surface of a tailings impoundment can significantly add to the stored volume. In the field, the tailings are thickened and hydraulically deposited into the containment structure in layers. In the centrifuge, tailings were prepared in layers and consolidated, thus allowing instrumentation of each layer before consolidation of the complete impoundment. Due to long consolidation time, large settlement and clear signs of liquefaction after a few cycles of dynamic loading, the need for improvement arose. One of the alternative management methods that can improve physical stability and geochemical properties is co-disposal of mine tailings and waste rock. In this study, co-mixing of the materials at a specified ratio of dry mass (waste rock to tailings) prior to disposal was examined. The behavior was compared to that of tailings alone with respect to consolidation rate, settlement accumulation, slope stability and response to dynamic loading.
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U2 - 10.1007/978-3-319-63543-9_3
DO - 10.1007/978-3-319-63543-9_3
M3 - Conference contribution
AN - SCOPUS:85067461348
SN - 9783319635422
T3 - Sustainable Civil Infrastructures
SP - 25
EP - 34
BT - Soil Dynamics and Soil-Structure Interaction for Resilient Infrastructure - Proceedings of the 1st GeoMEast International Congress and Exhibition, Egypt 2017 on Sustainable Civil Infrastructures
A2 - Abdoun, Tarek
A2 - Elfass, Sherif
PB - Springer Science and Business Media B.V.
T2 - 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017
Y2 - 15 July 2017 through 19 July 2017
ER -