The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Compressive strength (MPa)</td><td class="align_center">Tensile strength (MPa)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Cohesion (MPa)</td><td class="align_center">Internal friction angle (°)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">9.42</td><td class="align_center">1.421</td><td class="align_center">2.037</td><td class="align_center">0.21</td><td class="align_center">2.4</td><td class="align_center">57</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Rock mechanics parameters for numerical simulation.</div>

Shock and Vibration

tab5

Table 5

Table 5: The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method 