Plot > Strength Factors > Δσip Excess Stress
Plot > Strength Factors > RCFip Rock Wall Condition Factor
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Contours the strength for in-plane wall stress. These components can be accessed via the Strength Factor Components toolbar as follows:
This toolbar can be changed to a vertical orientation by dragging is against either the right or left hand edge of the main window. It can be changed back to a horizontal orientation by dragging is against either the top or bottom edge of the main window.
Selecting the
To calculate the in-plane wall stress, the stress state at each point on the grid plane is reoriented to determine the maximum and minimum tangential stress parallel to the grid plane.
The maximum wall stress for a virtual circular excavation oriented perpendicular to the grid plane can then be determined as [ 3 σ1i - σ3i ]. Note that σip is oriented normal to the grid plane and parallel to the direction of a line grid. Also note that σip, σ1i and σ3i are perpendicular to one another.
•dip direction is measured positive clockwise from the y-axis. •dip of the plane is measured positive down from the horizontal (i.e. the dip direction). •plunge of the normal is measured positive down (i.e. negative up) from the horizontal.
Strength parameters are set up using
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