search
menu

Geotechnical deformation and failure modeling of fine tailings capping

About this project

client
Institute for Oil Sands Innovation (IOSI)
location
Alberta
cost
$105,000 (Barr's fees)
completion date
2019

Conventional practice limits sand-cap placement to tailings that have already achieved trafficable strengths. Most fine tailings deposits in the oil sands industry will not achieve this strength until they have consolidated and dewatered for some time. Sand-cap or sand-layer placement using hydraulic delivery methods offers great potential as a cost-effective, technically feasible capping method for treated fine tailings of the oil sands industry. However, hydraulic placement is a novel technique for cap placement that requires study to determine the range of conditions where it is feasible.

As part of a collaborative project funded by the Institute for Oil Sands Innovation and Canada’s Oil Sands Innovation Alliance, Barr and Deltares evaluated the conditions needed to successfully place a cap on treated fine tailings deposits. The scope involved geomechanical numerical modelling (using FLAC 2D) of both subaerial and subaqueous hydraulic placement of sand and coke caps on a fine tailings deposit. Physical modelling of the subaerial sand capping was also conducted to help validate the modelling and develop important factors for scaling to commercial applications. The work is an important step in establishing a foundation for an engineering and design approach for sand cap placement.

Key team members

Farzaan Abbasy

Geotechnical Engineer

Nav Dhadli

Senior Chemical Engineer

Jim Langseth

Vice President
Senior Civil Engineer

Jed Greenwood

Vice President
Senior Geotechnical Engineer

Related oil sands facilities projects

Stationary-source evaluation for asphalt plants
Pre-acquisition environmental due diligence review
Testing and optimization of fine-tailings drying technologies
Phase I ESA for copper-nickel project
Siting and permitting for saltwater disposal wells
Ore transportation study
Detailed assessment of phosphorus sources and loading to Minnesota watersheds
Engineering design for HDD pipeline replacement under highway
Permitting, environmental assessment, and design for copper-nickel mine
Routine electrical, controls, and instrumentation support
Preliminary engineering for Mouse River enhanced flood protection project
Geotechnical investigation and design for expansion of ancient gold mine
Electric-energy resource options study
Environmental impact assessment for mountain-bike trail
Scoping study to increase magnetite-concentrate production capacity
Development of sewer plan and update of model
Engineering services for pipeline reversal
Upper Sheyenne River erosion and sedimentation risk assessment
Environmental integration support for Wamsutter Crude Oil System
Water supply sustainability study for City of Rochester
Capture efficiency testing for ethanol production facility
Study of engineering risks and site feasibility for windpower client
Chemical and biological monitoring of test ponds
Natural resources inventory and stewardship recommendations
Water-quality modeling and mapping for watershed district
Infiltration updates to the Minnesota Stormwater Manual
Geologic modeling and mine-plan development for aggregate quarries
Resource estimates for neodymium-rich rare-earth-element exploration project
Rapid response planning for aquatic invasive species
Environmental review for proposed natural-gas pipeline
Assessment and remediation of former dump site on university campus
Expansion of landfill-gas-fired power generation facility
Reciprocating internal combustion engine (RICE) applicability analysis and audit
Sustainable landscape master plan for Minnesota college campus
Permitting and environmental review for pipeline terminal expansion
Updating of Lake Superior chemical source inventory
Upgrade of wastewater treatment system
Environmental liability assessment at manufacturing facility
Environmental review and prefeasibility design for planned uranium mine
Vulnerability assessment of municipal stormwater system
Vulnerability assessment of a city’s aging storm sewer system
Test burn for cofiring coal and biomass
Transmission line EIS
Air-quality permitting and compliance support at pipeline terminals
Environmental permitting and compliance support at terminals
Living-streets planning provides framework for alternative street reconstruction
West Side Flats park and stormwater design
Monitoring of end-pit lake at oil sands mine
Stormwater management system for Minnesota district
Non-segregating tailings deposition study
Modeling and failure risk assessment of a municipal storm sewer system
XP-SWMM model update and calibration for Minnesota watershed
Air permit-to-install strategy and application
GHG compliance monitoring for oil sands facility
Hiawatha Golf Course alternatives analysis and master planning
Identification of wetland restoration opportunities
Air-quality-permitting support for refinery assets
Permitting assistance and fen management plan
Watershed management planning for Minnesota watershed district
Site reviews for solar gardens across Minnesota
Engineering design for crude-oil-terminal pipe rack
Removing dissolved metals from roadway runoff using ferric-oxide filtration
Stormwater-management minimal impact design standards and BMP design calculator
Hydropower facility evaluation and due diligence
Public-space and sustainable stormwater management decision-making framework
Engineering design for pipeline pump stations and terminals
Stormwater-development reviews for urban WMO
Design, review, and permitting of mountain bike park
Environmental site assessments for future site of mining and processing facility
Condition assessment and options study for hydro facility
One Watershed, One Plan development for southern Minnesota watershed district
Third-party EIS review of transmission line
Resource assessment and permitting assistance for industrial sands facility
Flood mitigation at refinery
Groundwater-flow model of the Twin Cities metro area
Geotechnical assistance for mine expansion at Julienne Lake
Development of a citywide GIS-based stormwater management water-quality model
Shoreline stabilization and restoration of Lake Minnetonka’s Big Island
Landscape master plan for Minnesota college campus
Stormwater infrastructure management assistance
Response to denatured ethanol release
Compliance, resource, and process evaluations for potential mining sites
Dispersion modeling at five ethanol production facilities
Evaluating tunnel system pressure
Berm-failure study at saltwater disposal well site
Urban watershed stormwater-development and permit reviews
Ecological residential development design preserves nature and city growth
Design and permitting for WISCO Oilfield Special Waste Landfill
Redevelopment services for New Brighton Exchange
Energy integration study for waste-heat utilization
Strategic planning for Freeway Landfill
Environmental services for coal-yard decommissioning
Brownfields redevelopment for Mississippi WMO headquarters
Redevelopment assistance for Clyde Iron Works site
Tongue River assessment
Chlor-alkali process design
Environmental permitting and compliance support for a refinery
AFFF containment upgrades evaluation
Air permitting for petroleum refinery’s waxy-crude processing project
Water reuse evaluation for zero liquid discharge at manufacturing facility