A critical appraisal of deformation-based support design approach
DOI:
https://doi.org/10.17159/Keywords:
rockburst, deformation-based support design, dynamic suppportAbstract
Empirical approaches, numerical modelling and analytical methods are employed in ground support design for rockburst conditions, but only analytical approaches attempt to provide a quantify the safety margins of a design. The Canadian rockburst handbook approach (CRBH) is the most widely known analytical approach. Stacey (2016) identified a state of “design indeterminacy” arguing that neither demand nor capacity can be determined with sufficient accuracy for conventional design processes. Since then, several important advancements were made to the CRBH approach resulting in the deformation-based support design (DBSD) approach. An independent appraisal of the DBSD approach is lacking. This paper provides an independent appraisal of the DBSD method, summarising the approach, identifying implicit and explicit assumptions, highlighting uncertainties, and raising questions requiring further refinement. Based on this appraisal the conclusion is reached that the state of “design indeterminacy” identified by Stacey is still present.
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