Excavation Method of Reducing Blasting Vibration in Complicated Geological Conditions

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:8.52em"/><col style="width:8.52em"/><col style="width:7.18em"/><col style="width:7.18em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Rock category</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Density (kg/m<sup>3</sup>)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Fresh rock</td><td class="align_center">24</td><td class="align_center">0.24</td><td class="align_center">2610</td></tr><tr><td class="align_left">Weaken rock</td><td class="align_center">20</td><td class="align_center">0.25</td><td class="align_center">2500</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The results of rock mass parameters inversion.</div>

Shock and Vibration

tab2

Table 2

Table 2: Excavation Method of Reducing Blasting Vibration in Complicated Geological Conditions 