Posted: August 15, 2019
Anticipated start: February 2020
Supervisory team: Jocelyn Hayley (University of Calgary), Brian Moorman (University of Calgary), Shawn Kenny (Carleton University) and Duane Froese (University of Alberta)
The performance and integrity of northern linear infrastructure, such as railway lines and road networks, may be affected by ground deformation geohazards (e.g. subsidence, slope instability, permafrost degradation), which may be influenced by hydrology and climate change effects.
This program will investigate a number of interrelated conditions that govern overall settlement of degrading permafrost such as strength, consolidation behaviour and excess pore pressure dissipation. We aim to develop simple constitutive relations that describe the major geomechanical properties based on measurable and available parameters including soil type and ice content. Using the experimental data from the network, a synthesized model, which predicts frozen strength and thaw consolidation for soil type, temperature and ice content will be developed. This project builds on statistical analyses to use simple constitutive models to go beyond analyses to prediction of anticipated ground response. Together with temperature dependent characteristics by network participants, this project will provide the basis to unitize the geomechanical model to develop a data layer providing practitioners with preliminary indications of sediment strength and sensitivity to thaw as part of the ground ice potential and geotechnical permafrost base map of Canada. Candidates should have BSc and MSc in geotechnical (civil) or geological engineering, with a strong background in numerical modeling.
To apply, send a cover letter, c.v., copies of transcripts and contact details for three references to Jocelyn Hayley (firstname.lastname@example.org) using Permafrost PhD in the subject line.