Import UnWedge File

The Import UnWedge File option allows you to import UnWedgeToRocTunnel3 files from the program UnWedge (Underground Wedge Stability Analysis program from Rocscience) into RocTunnel3. The following geometries and properties are imported:

• Project Settings (i.e., Units, Water Unit Weight, Design Factor of Safety, Design Standards)
• Joint Geometry (either as Measured Joints or Joint Surfaces)
• Joint Properties (i.e., Shear Strength and Waviness)
• Tunnel Geometry
• Material Property (i.e., Rock Unit Weight)

To export from UnWedge:

1. Select: File > Export > Export to RocTunnel3
2. Save the UnWedgeToRocTunnel3 (*.weg2roctunnel) file.

To import an UnWedge file into RocTunnel3:

1. Select: File > Import > Import UnWedge File
2. Open the UnWedgeToRocTunnel3 (*.weg2roctunnel) file.
3. A prompt should appear asking: "Would you like to import joints as measured joints? Selecting 'No' will import them as joint surfaces". Select Yes or No.
   1. If Yes:
      1. UnWedge joints are imported into the Define Measured Joints dialog and added to the model as Measured Joints nodes.
      2. The joints are circular disks, centered at UnWedge's joint polygon centroid and possessing maximum Radius distance from polygon centroid to any polygon vertex.
   2. If No:
      1. UnWedge joints are imported as separate Joint Surfaces and added to the model as Joint Surface nodes.
      2. The joints are shaped like the actual wedge joints.
4. The Material Property is added using the Rock Unit Weight from the UnWedge model.
5. The Tunnel geometry is imported as an External geology node and set with Applied Property = No Material to be treated as an Excavation volume by the engine.
6. The Rock Mass is also added as an External geology node and set with Applied Property = Material 1. The box encompasses the entire extents of the tunnel and wedges from UnWedge so that blocks can be formed inside.
7. Joint Properties are added using the Shear Strength Model and Waviness parameters from Joint 1, Joint 2, and Joint3 from the UnWedge model.
Tensile Strength from UnWedge is not used in a RocTunnel3 analysis.
8. The Joint geometry is imported and set with the corresponding Joint Property.
9. Any truncated faces are imported as Joint Surface nodes with the "Truncation" Joint Property which provides no shear strength.