Ground Subsidence

Surface subsidence (vertical deformations) or mining-induced ground deformations (horizontal and vertical) are often an inevitable consequence of many mining methods. Itasca evaluates mining-induced subsidence related to the extraction of ore from both underground and open pit mines, together with dewatering-induced subsidence. Services provided include: field investigation for acquiring geomechanical and hydrogeological properties; subsidence back-analysis; and prediction of the magnitude and extent of subsidence related to a particular mine design in order to optimize location of infrastructure and understand any impacts on existing property and the surface environment.

Traditionally, empirical and analytical methods have been used to assess the limits of subsidence from underground mining. However, generally these methods are restricted to simplified, regular mining geometries and often limited to two-dimensional problem geometries.

Itasca engineers perform three-dimensional numerical modeling assessments of mining-induced subsidence. Through the calibration of observed and measured subsidence features at a number of operating and abandoned mine sites, Itasca has developed a rigorous methodology that predicts the limits of large-scale surface cracking, angular distortion, and horizontal ground strains capable of causing potential building damage of ground surface infrastructure.

Latest News
  • Webinar: Using Rigid Blocks in PFC This webinar will provide a brief overview of PFC modeling using convex rigid blocks, including...
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  • Remote Trainings Planned for 2021 Itasca Consulting Group is planning remote, online training for early 2021....
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  • 3DEC 7 is officially released! Enhanced user interface with new automated block and zone generation tools, and new structural elements....
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Upcoming Events
2 Nov
JNGG 2020 Lyon
The 10th National Days of Geotechnics and Engineering Geology are co-organized by the GeoMaS laboratory of INSA Lyon, ENTPE and Cerema ... Read More
2 Feb
Presented by Dr. Richard Armstrong in collaboration with Itasca Consulting Group.
Presented by Dr. Richard Armstrong in collaboration with Itasca Consulting Group. This hands-on, virtual training course is 16 hours to... Read More
6 Sep
AFTES 2021 - Underground, a space for innovation
The central theme of this edition is “the underground, a space of innovation”.... Read More