A Risk Assessment Method for Rockburst Based on Geodynamic Environment

<table class="fixed-width table-group" id="tab8"><tr><td><table class="table"><colgroup><col style="width:5.18em"/><col style="width:8.03em"/><col style="width:5.63em"/><col style="width:8.37em"/><col style="width:5.14em"/><col style="width:7.54em"/></colgroup><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left"><b><i>Rc </i>(MPa)</b></td><td class="align_center"><b>&gt;60</b></td><td class="align_center"><b>60~35</b></td><td class="align_center"><b>30~15</b></td><td class="align_center"><b>15~5</b></td><td class="align_center"><b>&lt;5</b></td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Hardness</td><td class="align_center">Extra Hard Rock</td><td class="align_center">Hard Rock</td><td class="align_center">Slightly Soft Rock</td><td class="align_center">Soft Rock</td><td class="align_center">Extra Soft Rock</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The correspondence relationship of rock uniaxial compressive strength <i>Rc</i> and rock hardness.</div>

Shock and Vibration

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Table 8

Table 8: A Risk Assessment Method for Rockburst Based on Geodynamic Environment 