Risk Assessment and Management

Tue, 08 Aug 2023 00:00:00 +0000

Geotechnical design has moved from the Factor of Safety to the Reliability Index, and is now moving toward risk-informed design and management. That shift asks a harder question than “will it fail?” It asks what is exposed, what the consequences would be, and where limited resources should go first. CGG works on that question at the regional scale, where infrastructure owners actually have to make decisions.

Our work centers on landslides and slope performance. We build landslide inventories and susceptibility models from aerial photography, geologic and soils mapping, hydrologic records, LiDAR point clouds and derived terrain models, and infrastructure and population data, with particular attention to how model structure and the treatment of non-landslide samples shape the resulting hazard estimates. Ongoing projects extend this to rainfall-triggered slope performance along transportation corridors and to susceptibility mapping in landslide-prone urban regions.

Hazard is only one term. We pair these models with exposure and consequence information so that outputs are not just maps of where failure is likely, but assessments of what that failure would cost, expressed in forms that support prioritization, mitigation planning, and long-term resilience for the communities and networks involved.

Slope Stability | Computational Geosystems Group

Risk Assessment and Management