Slope Stability Analysis

Sirovision’s Slope Stability Analysis tools offers a much more sophisticated, less conservative stability classification of potential hazards in comparison to traditional methods based only on orientations of mapped structures. The consideration of rock characteristics such as rock density, cohesion, friction and persistence of structures in conjunction with pore pressure grids, geological domains and imported complex structures produces a more reliable computation of slope stability.

The advantage of 3D surfaces means detected hazards can also be visualised and and measured accurately for maximum benefit to geotechnical and mining engineers.

Added value to your operation

  • Engineering staff can identify the physical size, location and stability classification of features in your pit walls (i.e. you will know where failures are most likely, as well as the volume of materials involved)
  • Engineered solutions to minimise risk and maximise safety in the operations can be implemented to ameliorate problems
  • It enables monitoring equipment to be correctly placed to further improve safety in the pit.

 


 

Solutions provided by Sirovision’s slope stability data

  • Geotechnical Engineers use stability data to design and maximise ground support efficiency with confidence that the efforts are focused in the correct areas and that safety and risk are paramount considerations.
  • Mining Engineers use stability data to design bench widths and pit wall angles to maximise ore extraction and productivity with a clear understanding of the safety aspects and risks associated with the wall stability.

 

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Slope Stability Analysis functions include:

Plane Intersection Tool

The Plane Intersection Tool  provides the practitioner with a ‘feel’ for the surface being mapped by allowing them to examine potential blocks that may form in advance of the slope stability analysis. This should assist experienced practitioners to better map the surface.

Automated Wedge Detection

The tetrahedral wedge detection tool allows the practitioner to analyse the ‘wedges’ formed between two orientation discontinuity sets. It includes the determination of a release surface to construct wedges whose mass and volume are determined from the characteristics of the rock surface (e.g. bedding). The practitioner has control over the analysis parameters that include the limiting equilibrium stability calculations.

Automatically detecting blocks in an open pit

Automated Block Detection

The polyhedral block detection tool allows the practitioner to analyse rigid blocks daylighting on the rock mass surface. Unlike the Wedge Analysis method, blocks of any shape (called polyhedra) can be accommodated (i.e. not just simple wedges) and their mass and volume are determined from the characteristics of the rock surface domain. The practitioner has control over the analysis parameters that include the limiting equilibrium stability calculations.

Importable geotechnical data

The following objects are considered when calculating the factor of safety of detected wedges and blocks offering a more sophisticated and realistic determination of slope stability.

Geological Domains

Geological domains can be imported or mapped manually on 3D surfaces.  Rock density, cohesion, critical friction and pore pressure values can be attributed to each domain.

Pore Pressure Grids

Pore pressure grids can be imported as ASCII text files. Pore pressure values in KPa are colour coded to show gradients in pressure.

Complex Structures

Curved or complex structures can be imported as .DXF.   Automated block detection analysis can take into account curved or complex structures and detect the blocks that form based on the intersections of the mapped planar and imported structures.