This document provides a quick guide for converting a 3D cross section created in geological modeling software into a 2D cross section that can be imported into the slope stability software SLIDE. It outlines 8 steps: 1) Open the 3D cross section in AutoCAD top view; 2) Rotate objects to be parallel to the XZ-plane; 3) Flatten in front view; 4) Create layers for boundaries; 5) Assign boundaries to layers; 6) Save as a DXF file; 7) Open SLIDE; 8) Import the DXF file, assigning layers to boundary types; 9) External and material boundaries will be generated.

1. SLOPE STABILITY
BUILDING 2D SLIDE MODEL FROM
3D LITHOLOGY CROSS SECTION

2. 2D limit equilibrium method is commonly used to assess
the slope stability. For complex excavations such as open
pits of large road cuts, the cross section of material units
are generated in geological modelling software packages.
These cross sections are 3D having created in different
orientation at critical section of excavations. This
presentation provides a quick guide to convert the 3D
cross section in AutoCAD to a 2D cross section and then
import it into SLIDE (Rocscience Inc).

3. STEP 1: In AUTOCAD, go to top view.
3D view in AutoCAD Top View

4. STEP-2: Rotate all objects from one end to be parallel to XZ-plane.
STEP-3: Go to front view and flatten all objects.
Top View Front View

5. STEP 4: Create three layers naming “EXTERNAL”, “MATERIAL” and “WATER_TABLE”.
STEP 5: Assign different boundaries to their related layers.
STEP 6: Save it as .DXF file.

6. STEP-7: Run Slide
STEP 8: Go to FileImportIMPORT DXF…
STEP 9: The Defined Layers Name Is Appeared In Layer Assignment Tab. Each layer must be assigned to the proper
boundary type.
STEP 10: External and material boundaries will be generated in the SLIDE model. The already defined
material unites can be assigned to the right boundary