Effect of Joint Density on Rockburst Proneness of the Elastic-Brittle-Plastic Rock Mass

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Normal stiffness (<i>K</i><sub><i>n</i></sub>/GPa·m<sup>−1</sup>)</td><td class="align_center">Shear stiffness (<i>K</i><sub>s</sub>/GPa·m<sup>−1</sup>)</td><td class="align_center">Cohesion <i>c</i><sub><i>j</i></sub> (MPa)</td><td class="align_center">Internal friction angle <i>φ</i><sub><i>j</i></sub> (°)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">90</td><td class="align_center">70</td><td class="align_center">13</td><td class="align_center">36</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mechanical parameters of structural surfaces.</div>

Shock and Vibration

tab2

Table 2

Table 2: Effect of Joint Density on Rockburst Proneness of the Elastic-Brittle-Plastic Rock Mass 