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

<table class="table-group" id="tab10"><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">15.743</td><td class="align_center">15.634</td><td class="align_center">14.577</td><td class="align_center">15.365</td></tr><tr><td class="align_left">4</td><td class="align_center">15.845</td><td class="align_center">15.756</td><td class="align_center">15.421</td><td class="align_center">15.957</td></tr><tr><td class="align_left">5</td><td class="align_center">16.252</td><td class="align_center">16.221</td><td class="align_center">16.242</td><td class="align_center">16.243</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 at each measuring point of profile 1-1 when the thickness of the concrete spray layer is 350 mm (mm).</div>

Shock and Vibration

tab10

Table 10

Table 10: Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel 