Split-FX Analysis Service
Work with the engineers at Split Engineering to process your pointclouds, run slope stability simulations and write a short report regarding your rock mass. We will consult with you regarding best practices for approaching the LIDAR scanning in the field so that the best possible scan for processing and analysis is obtained.
Pointcloud processing is conducted using the Split-FX® software. This software is designed specifically to extract geotechnical information from point clouds.
For rock mass characterization, important attributes of the geologic structure are extracted from the point clouds, including discontinuity orientation and spacing. The orientation results are plotted on a stereonet and the primary joint sets are determined.
The geologic structure is analyzed using the following steps in the Split-FX program:
- For each section, a meshing direction is identified which is roughly perpendicular to the surface in that section.
- A triangulated surface is created from the point cloud.
- Fracture “patches” are automatically found by finding collections of triangles that conform to a flatness criterion.
- Fractures that appear as traces and not surfaces on the rock slope are extracted by manually delineating the fracture traces on the point cloud.
- The orientation of the fracture patches and traces are plotted on a stereonet, and joint sets are determined. On the FX stereonet, larger fractures are plotted as a larger circle to be able to identify the most persistent discontinuities.
- Data is exported to the modeling software programs for slope stability analysis including plane or wedge failure.
Contact Split Engineering to discuss your project further.
Some key information in order for us to understand your project and formulate a scope of work includes:
- Location to be scanned (state, nearest city, mine or highway mile marker, etc.) and history of the site (old highway being widened, for example).
- Purpose of the scan project (was there a slope failure that we are investigating, for example) and how will this data be used.
- Surface area to be scanned (approximate square meters or square feet of surface area to be scanned).
- Is the scan complete, or does this need to be done? If the scan was already conducted we need information on the type of scanner used, scan point spacing, number of scan positions, among other information.
- What information do you want from the scan:
- Processed point clouds for viewing.
- Rock mass characterization information (fracture orientations, stereonets, fracture spacing, fracture roughness, GSI, etc.).
- Cross sections.
- Slope stability information (factor of safety, probability of failure, for plane wedge and toppling failure).
- Rockfall trajectory analysis.
- Change detection. Note: for this there will need to be "before" and "after" scanning or ongoing periodic scanning.
- Finite element numerical modeling for surface or underground stability analyses.