Tailings dams are among the largest and most critical artificial structures in the world. Their analysis requires careful evaluation of all components and loading conditions. Itasca has performed detailed design and stability analyses for major tailing dams. Each analysis has been reviewed by experts representing governing authorities. Although every tailings dam analysis is unique, Itasca analyses typically include the following:
collection and review of site topographic and geotechnical data,
specification and supervision of laboratory tests to determine static and dynamic properties of tailings, foundation, and dam construction materials,
selection of material models and calibration of material parameters to match laboratory test data,
development of numerical models that simulate the continuous construction nature of mine tailings dams,
analyses to represent the changes in pore pressure brought about by tailings consolidation and fluid flow over time,
evaluation of static safety factors using the shear strength reduction technique,
dynamic analysis of stability and liquefaction potential due to seismic loading, and
recommendations for monitoring to insure design assumptions are achieved.
In addition to design analysis, Itasca has been involved in proposing standards for mining operations in seismically active areas, geotechnical investigations of tailings dam failures, and technical seminars to share experience and expertise. Selected examples of Itasca tailings dam projects can be seen in the following table.
Tailings Dam
Country
Pera Jusante y Gelado
Brazil
Assarel Medet
Bulgaria
Ellatzite
Bulgaria
El Mauro
Chile
El Morro
Chile
Laguna Seca
Chile
Lautaro
Chile
Mantos Blancos
Chile
Ovejería
Chile
Pampa Pabellón
Chile
Quillayes
Chile
Santo Domingo
Chile
Sierra Gorda
Chile
Torito
Chile
Tórtolas
Chile
Pampa Austral
Chile
Porvenir
Perú
Quebrada Honda
Perú
South Maybe Canyon
USA
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