How can I scale down the size of wedges? How will this affect the factor of safety and support requirements?

Unwedge always initially calculates the maximum sized wedges which can form around an excavation. This tutorial demonstrates how to scale down the size of wedges according to field measurements such as joint trace length, joint persistence, wedge face area etc. Wedge scaling is important because the assumed wedge size can have a significant effect on safety factor and support requirements.

Scaling Wedge Size Tutorial (click to view PDF file of tutorial)

Topics Covered in this Tutorial include:

  • Scaling wedge size

  • Scaling all wedges

  • Scaling individual wedges

  • Safety factor and scaling

 

Scaling applied to all perimeter wedges