Incline

Use the Incline option to apply an inclination to a single bench (or berm) polygon. It is used to apply a drainage gradient to an existing bench string in a pit design. This option registers the nominated bench outline onto a plane that has been rotated from the horizontal. The plane is defined by a dip direction and dip angle (down is a positive dip).

The dip direction is defined by selecting a line segment from the screen. The first point of the line segment fixes the level of the plane at that location and the plane is then inclined by the specified dip angle in the direction of the line segment. The bench outline string is then registered onto this plane. Thus the X and Y coordinates of the outline points will not change but the level (Z value or RL) of each point will correspond to the level of the reference plane at that location.

Diagram 1 - Applying an Inclination (Cross Section)

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Instructions

Click the Incline button on the Open Cut Design toolbar.

or

On the Open Pit menu, point to Open Cut Design, and then click Incline.

Select the bench level outline.

Important Since this option registers the outline onto a plane, any existing variations in levels (Z values) or the original outline will be lost.

Select the line for dip direction. Any line segment on the screen may be selected to define the location of the reference plane in space. The first point of the line segment will anchor the plane at that location in X, Y and Z. The plane will then be inclined in the direction of the second point of the line segment.

The following panel is then displayed

Enter the bench slope. The angular units (either degrees of gradians) is set through the Miscellaneous section of the Tools > Preferences option. A positive angle is an inclination down from horizontal in the direction of the selected line.

If you are entering degrees, then the angle must not exceed 10°. If gradians, the angle must not be greater than 11 gradians.

Click OK.

The inclination is then applied. You will then be asked whether or not you want to retain this inclination.