Optimization and Application of Spacing Parameter for Loosening Blasting with 24-m-High Bench in Barun Open-Pit Mine

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Blasting area</td><td class="align_center">Direction</td><td class="align_center">Maximum vibration speed (cm/s)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="3">1460 horizontal conventional blasting zone</td><td class="align_center"><i>X</i></td><td class="align_center">−5.551</td></tr><tr><td class="align_center"><i>Y</i></td><td class="align_center">−3.707</td></tr><tr><td class="align_center"><i>Z</i></td><td class="align_center">7.032</td></tr><tr><td class="align_left" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="3">1120 horizontal loosing blasting zone</td><td class="align_center"><i>X</i></td><td class="align_center">7.322</td></tr><tr><td class="align_center"><i>Y</i></td><td class="align_center">−5.835</td></tr><tr><td class="align_center"><i>Z</i></td><td class="align_center">8.763</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of blasting vibration speed.</div>

Shock and Vibration

tab5

Table 5

Table 5: Optimization and Application of Spacing Parameter for Loosening Blasting with 24-m-High Bench in Barun Open-Pit Mine 