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

<table class="table-group" id="tab1"><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 (deg.)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">9.42</td><td class="align_center">0.35</td><td class="align_center">22.96</td><td class="align_center">0.23</td><td class="align_center">3</td><td class="align_center">25</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

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

Shock and Vibration

tab1

Table 1

Table 1: The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method 