Geotechnical Engineer- Mining and Tailings

• Nov 2022 - Present

Geotechnical & Tailings Engineer

• Aug 2021 - Nov 2022

- Lead design engineer for filtered tailings stack design at a European mine site - Prefeasibility, feasibility, and detailed design of Filtered Tailings Stacks and Tailings Dams of both Canadian and International mines - Dam safety assessments - Tailings dams potential failure mode analyses and risk assessment for dams in Canada and Brazil - Imlementation of Global Industry Standard for Tailings Management (GISTM) for existing and new tailings storage facilities - Deformation analyses using Flac - Seepage and Slope stability assessment - Planning and executing Laboratory testing monotonic and cyclic simple shear and triaxial tests

Senior Geotechnical & Tailings Engineer

• Dec 2020 - Aug 2021

- Filtered tailings stack design at a mine site in Serbia - Prepared design criteria and dam classification - Stability and seepage analyses - Planned and excited geotechnical subsurface investigations - Planned and managed geotechnical testing of tailings and foundation soil materials including simple shear and triaxial tests - Used critical state soil mechanics to interpret CPT data for the determination of in-situ state parameters - Static and seismic liquefaction potential assessments

Geotechnical Engineer

• Apr 2018 - Dec 2020

-Detailed design of Tailings Storage Facilities (TSF). Worked on cross-disciplinary topics including the design of seepage collection ditches and water balance management of the TMF site in addition to the geotechnical design of the dam. -Dam safety review -Static liquefaction potential assessment -Presented the design to the client and the independent tailings review board (ITRB). -Dam core deformation analysis using FLAC. -Sub-surface characterization including in-situ (including CPT, FVT, and SPT) and laboratory testing (including permeability, triaxial, direct shear, and simple shear tests) planing and results interpretation. -Evaluated the liquefaction potential of the weak foundation soil units through developing a cyclic simple shear testing program and performing SHAKE2000 analysis in addition to using the CPT based analyses. -Prepared dam monitoring plan and instrumentation. -Designed filters for the TMF dams. -Prepared the design and site investigation reports in addition to the tender and construction documents. -Performed large strain consolidaiton modelling of tailings using FLAC. The results were used to simulate the unsaturated water flow through the tailings using SoilVision’s SVFlux. -Designed geotextiles and geomembranes to cover tailing. -Derived the unsaturated tailings properties for the water flow and cover design purposes in collaboration with the geochemistry group.

Research Assistant- Tailings Consolidation and Backfill Design

• Sep 2012 - Apr 2018

• Efficiently simulated consolidation of backfilled mine tailings during and after deposition using Itasca’s FLAC3D and Biot’s consolidation theory • Performed large scale column test to simulate the in-situ backfilling situation and verify the numerical analysis results • Successfully simulated the hydro-chemo-mechanically coupled consolidation of cemented mine tailings through the development of an optimized code in FISH (FLAC3D’s scripting language). The FLAC3D numerical simulation was then benchmarked against the analytical solution and the pore water pressure predictions were within 2% of the analytical solution. The FLAC3D code will be used by mining companies to optimize their backfilling strategy. The code makes it possible to have safer and cheaper barricades while the ore body extraction can be performed in a much shorter time • Performed detailed analysis and interpretation of in-situ monitoring • Performed novel permeability measurement and oedometer tests on cemented mine tailings samples at different ages with different loading rates that simulated the in-situ stress paths and curing conditions • Assisted undergraduate student with the numerical simulation of tailings dam stability and seepage analysis using Rocscience software packages • Simulated the Dynamic Response of cemented mine tailings using SHAKE2000 and developed an analysis method to evaluate their liquefaction susceptibility using a simplified approach • FLAC3D code was developed to simulate the response of backfilled mine tailings to rockbursts and earthquakes • Assisted undergraduate and graduate students in their Geotechnical Design course in designing deep and shallow foundations for a highway bridge project, slope stability analysis, retaining wall design, and preparation of the geotechnical report • Simulated the response of Ottawa and Fraser River sand using two different plasticity models (CamClay and Deviatoric Hardening) using Finite Difference in MatLab

Research Assistant- Soils Liquefaction Assessment

• Sep 2009 - Aug 2012

• Performed monotonic and cyclic triaxial and simple shear tests on Fraser River sand • Introduced a new correction factor to the Seed’s simplified method of liquefaction susceptibility analysis to incorporate the effects of overconsolidation and initial shear stress magnitude and direction • Performed monotonic and cyclic triaxial and simple shear tests on Fraser River sand • Introduced a new correction factor to the Seed’s simplified method of liquefaction susceptibility analysis to incorporate the effects of overconsolidation and initial shear stress magnitude and direction

Geotechnical Engineer

• Sep 2008 - Sep 2009

• Geotechnical site investigation, Geotechnical Drilling, Borehole logs and Soil Classification • Slope stability analysis • Shallow and Deep Foundations design • Geotechnical site investigation, Geotechnical Drilling, Borehole logs and Soil Classification • Slope stability analysis • Shallow and Deep Foundations design

Teaching Assistant

• Jan 2007 - May 2008