A Risk Assessment Method for Rockburst Based on Geodynamic Environment

<table class="fixed-width table-group" id="tab11"><tr><td><table class="table"><colgroup><col style="width:4.62em"/><col style="width:9.08em"/><col style="width:11.31em"/><col style="width:10.19em"/><col style="width:10.19em"/><col style="width:9.08em"/></colgroup><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Index</td><td class="align_center">Mining depth /m</td><td class="align_center">The ratio of maximal horizontal main stress to the vertical stress</td><td class="align_center">Vertical crustal deformation rate ( mm·a-1)</td><td class="align_center">Distance between mine position and active fault (b=7600 m)</td><td class="align_center">Ratio of hard rock on the roof</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Value</td><td class="align_center">450</td><td class="align_center">1.52</td><td class="align_center">-0.5</td><td class="align_center">1200</td><td class="align_center">100%</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The value of each rockburst impact factor in the Tongxin coal mine.</div>

Shock and Vibration

tab11

Table 11

Table 11: A Risk Assessment Method for Rockburst Based on Geodynamic Environment 