RocPlane FAQs

Below you will find answers to some Frequently Asked Questions (FAQs) for RocPlane. If you cannot find an answer to your question or problem after reading the FAQs:

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FAQs

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1. Why is the Hoek-Brown failure criterion available in RocPlane? The Hoek-Brown criterion is a rock mass failure criterion, and is not applicable to failure along a single joint plane.

   That is a very good point. It is true that the Hoek-Brown failure criterion is only applicable to jointed rock masses, and is not applicable to failure along a single joint plane. However, the failure surface in RocPlane does not necessarily have to represent a single discrete joint plane. The use of the Hoek-Brown (or Generalized Hoek-Brown) criterion in RocPlane should be considered as follows: the failure plane represents a linear failure surface through a jointed rock mass, rather than a single joint plane. Only under these conditions should the Hoek-Brown failure criterion be applied in RocPlane.

2. What is the difference between Probability of Failure and Probability of Sliding?

    See the Probability of Failure topic.