Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Blasting times</td><td class="align_center">Arch bottom</td><td class="align_center">Arch top</td><td class="align_center">Left arch waist</td><td class="align_center">Right arch waist</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">3</td><td class="align_center">29.654</td><td class="align_center">28.765</td><td class="align_center">28.354</td><td class="align_center">28.968</td></tr><tr><td class="align_left">4</td><td class="align_center">29.877</td><td class="align_center">29.745</td><td class="align_center">28.976</td><td class="align_center">29.983</td></tr><tr><td class="align_left">5</td><td class="align_center">32.745</td><td class="align_center">32.657</td><td class="align_center">31.345</td><td class="align_center">31.987</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The cumulative value of displacement of each measuring point of profile 1-1 without initial support (mm).</div>

Shock and Vibration

tab9

Table 9

Table 9: Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel 