Create and Import the Section

1. Choose File > New.
2. Choose File > Import Section > DXF and open case1-GroundModel.dxf from Case_1B_homogeneous_HB.
3. Select Meters under Import as, then click OK.
4. Click the South face of the view cube to align the section view. Expand the section in Navigation and select Ophiolite.

Finding the Rock Layer Expand

The workbook names this case’s section case1B-GroundModel1. If a fresh DXF import uses a different name, rename the section to match before running it. Alternatively, open Case1B_starter.cbf from the exercise folder and check all inputs below.

Define Bench and Material Properties

Select Ophiolite, then enter:

Property	Value
Bench height	10 m
Bench face angle	90°
Minimum berm width	6.5 m
Unit weight	25.9 kN/m³
Strength model	Generalised Hoek-Brown
UCS / intact compressive strength	50 MPa
Geological Strength Index (GSI)	45
Intact rock constant (mi)	12
Maximum minor principal stress (σ3,max)	-1 MPa
Disturbance factor (D)	1

Use -1 MPa for σ3,max in this exercise, as specified in the workbook. For field definitions, see Rock Properties.

Hoek-Brown Input Fields Expand

Set the Slope Geometry

Select case1B-GroundModel1 in Navigation and enter:

Section Input	Value
Bench definition	Bench height
Target FoS	1.3
Slope Anchor > Prescribed point	Crest
Horizontal Crest Position	700 m
Failure Direction	Right to left
Target slope height	230 m

Case 1b Crest Anchor Expand

Case 1b Slope Height Expand

The height fits 23 full benches × 10 m = 230 m, so the target and bench-compatible heights match. Check the green OSA search region before starting the simulation.

Save and Run the Simulation

1. Choose File > Save As and save the project as Case1B_final.cbf in the exercise folder. Use a separate working folder if you want to keep the supplied reference project for comparison.
2. Select the Simulation tab beside Visualiser, at the bottom of the main workspace, then select case1B-GroundModel1.
3. Set Simulation results location to Automatic. A section simulation folder is created beside the saved .cbf project when the simulation starts.
4. Click Start. If Simulation Check lists an issue, use Fix to open the affected field, correct it, and select Check Again.
5. Once the check passes, click Start again. Review any later geometry or groundwater warnings and select your configured account if prompted. If the folder belongs to another account, cancel and choose a separate Custom folder to keep its existing results.
6. Monitor the Node status summary and use Fetch results to retrieve the output.

For more detail, see Running Simulations. If the analysis does not start, use Simulation Does Not Start.

Review the Results

The workbook’s example reports:

Result	Example Value
Target FoS	1.3
Achieved FoS	1.362
Target slope height	230 m
Bench-compatible slope height	230 m

Case 1b Example Result Expand

Confirm that the crest remains at 700 m, the slope height is 230 m, and the achieved FoS meets the specified target. The supplied Case1B_final.cbf provides the reference model setup.

Export and Reuse the Output

1. On the Simulation page, expand Output Tools.
2. Choose the required DXF export format, then click Export DXF.
3. To bring the optimised geometry back into the project, click Create project section from output.
4. Open Visualiser and find the new section in Navigation.

Export option	When to use it
Rocscience	Prepare a 2D DXF for Rocscience software. The orientation is converted to the required import plane and the closed external boundary is generated automatically.
Global	Keep the original global coordinates for comparison with the source model.
Local XZ	Align the section with the XZ plane, with a fixed Y coordinate.
Local XY	Flatten the section onto the XY plane, with a fixed Z coordinate.

Exporting the Optimised Profile Expand

Creating a Project Section from Output Expand

For a Rocscience RS2 workflow, follow Importing Output into Rocscience RS2 and check the imported boundary assignments.

To export optimised slope angles as a block model CSV, follow Exporting the Section Block Model.