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Full-Text Articles in Civil and Environmental Engineering
Static Liquefaction And Critical State Mechanics Of Gold Mine Tailings Subjected To Different Stress Paths, Amir Reza Fotovvat
Static Liquefaction And Critical State Mechanics Of Gold Mine Tailings Subjected To Different Stress Paths, Amir Reza Fotovvat
Electronic Thesis and Dissertation Repository
The mechanisms through which mine tailings fail have been the interests of many studies recently. In this series of studies, the flow liquefaction and instability behavior of gold mine tailings were examined within the framework of critical state soil mechanics. In the first study, the behavior of a gold mine tailings in stress paths involving extensional consolidation or shearing in extension was evaluated. Monotonic tests were carried out on isotropically and Ko-consolidated samples to assess the effect of stress-induced anisotropy and mode of shearing on the static liquefaction characteristics tailings. In the second study, the drained instability of …
Towards Realistic Simulation Of Penetration Tests And Instability Analysis Of Sand: A Micromechanical Perspective, Seyedshayan Hashemi
Towards Realistic Simulation Of Penetration Tests And Instability Analysis Of Sand: A Micromechanical Perspective, Seyedshayan Hashemi
Electronic Thesis and Dissertation Repository
In this series of studies, the capability of Discrete Element Method (DEM) to simulate the behavior of granular materials has been examined. In the first study, various boundary conditions are simulated through a series of DEM-based miniature calibration chamber tests to investigate the influence of boundary conditions on cone tip (qc) and sleeve frictional (fs) resistances. The second study focuses on the influence of microparameters such as state, modulus, rolling resistance, inter-particle friction, and probe properties on CPT measurements in a centrifuge setting. DEM has been used in the last study to investigate the instability of …
Studies On The Liquefaction Behaviour Of Tailings And Natural Sand, Guillermo Riveros
Studies On The Liquefaction Behaviour Of Tailings And Natural Sand, Guillermo Riveros
Electronic Thesis and Dissertation Repository
This series of studies explores the liquefaction behaviour of cohesionless mine tailings and a natural sand and examines the effectiveness of a bio-mediated treatment for the mitigation of liquefaction. The first study investigates the flow liquefaction failure of the Fundão tailings dam (2015) by analytically assessing the stability of the breached abutment, accounting for the specific triggering mechanism and subsequent strength loss that led to its collapse. The second study evaluates the static liquefaction behaviour of gold mine tailings and its correlations with shear-wave velocity through an experimental program comprised of direct simple-shear and bender element tests. The last study …