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
  • Stability and Stress-Deformation Analyses of Reinforced Slope Failure at Yeager Airport This paper describes the material properties along with the inverse limit-equilibrium and permanent deformation analyses...
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  • Computers and Geotechnics: Scott Sloan Best Paper Award for 2019 ...
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  • Introducing Our New IMASS Constitutive Model The Itasca Constitutive Model for Advanced Strain Softening (IMASS) has been developed to represent the...
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Upcoming Events
8 Mar
FLAC3D 2021 Online, Live Introductory Training
Three days of general feature training addressing basic concepts and recommended procedures for geotechnical numerical analysis.... Read More
22 Mar
3DEC and UDEC 2021 Online, Live Introductory Training
An introduction to UDEC and 3DEC for application to geotechnical analysis.... Read More
12 Apr
PFC 2021 Online, Live Introductory Training
PFC 2021 Online, Live Introductory Training... Read More