CGS Colloquium Tour: Mitigating a fatal flaw in modern geomechanics: understanding uncertainty, applying model calibration, and defying the hubris in numerical modelling
Workshop: Terrain Analysis for Geotechnical Investigations
FREE Event (Please Register)
ABOUT THE EVENT /
Kathy Kalenchuk, Ph.D., P.Eng.
This colloquium has been prepared to achieve two objectives. The first objective is to provide a discussion of the practical limitations of numerical modelling in the field of geomechanical engineering. Too many discussions of numerical methods in geomechanical engineering are centered on the impressive ability of numerical tools to conduct complex and sophisticated analyses with relative ease and efficiency. Practitioners need to have a grounded conversation of numerical modelling with the reality that geomechanical designs are often data limited, with high degrees of uncertainty. When data limits and uncertainty are overlooked geomechanical engineers are at risk of introducing unforeseen fatal flaws in our engineering design. The second objective is to provide ‘how to’ guidelines for model calibration using a variety of ground reaction data types. Model calibration is truly the only means to reduce numerical uncertainties. Formal training in numerical modelling is often focused on software utilization and sometimes computational methods, however there are few opportunities for formal training on how to calibrate a model for practical engineering applications. This colloquium provides workflow guidelines for calibration methods and procedures.
8:00 AM - 5:00 PM
Presenter Details /
Lynden Penner, M.Sc., P.Eng., P.Geo.,
Jason Cosford, Ph.D., P.Geo.,
❖ A hands-on, interactive workshop tailored to the interests of the participants.
❖ Identification and interpretation of Canada’s landforms, landscapes, surface and subsurface materials from airphotos, satellite images, DEMs and multidisciplinary maps. We will select and analyze, along with course attendees, an appropriate number of 3D air photo stereograms appearing in the 680-stereogram course manual, which will include: bedrock, glacial (includes glaciofluvial and glaciolacustrine), fluvial (running water), eolian (wind), shorezone, groundwater, peatland (wetland), permafrost and colluvial (e.g., ravine slope and ground movements) landforms.
❖ Case history examples include a wide range of sub-disciplines selected from over 5,000 remote sensing consulting assignments:
- Geological (mineral and petroleum exploration)
- Geohazards (e.g., unstable ground, shore erosion, others)
- Hydrological (groundwater and surface water)
- Cryological (ice and permafrost)
- Geotechnical / geological engineering (site and route characterization and evaluation)
- Environmental (terrain sensitivity, shore erosion and environmental assessment)
- Tectonics (geologic structures / tectonic inheritance/ lineament mapping/ subsurface data integration)
❖ Application of digital remote sensing (satellite imagery and DEMs) and geographic information systems (GIS) technologies that assist the interpretation and integration of multidisciplinary geospatial datasets for analysis, presentation and assessment.
❖ Workshop materials: 1) 3-D air photo manual titled Landforms and Surface Materials of Canada: A Stereoscopic Airphoto Atlas and Glossary; 2) An 80-page introductory textbook (DOWN TO EARTH) with 2D air photos and figures and tables, used to describe and illustrate applied multidisciplinary remote sensing; 3) metal pocket stereoscope; and 4) slides describing case history remote sensing applications. Items 1, 2 and 3 are provided for use during the workshop and can be purchased separately.