Study of the Growth Process of Original Crack in the Surrounding Rock of Tunnel under the Adjacent Explosive Load

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Material</td><td class="align_center">ρ (kg/m3)</td><td class="align_center">Cd (m/s)</td><td class="align_center">Cs (m/s)</td><td class="align_center">Ed (GN/m2)</td><td class="align_center">υd</td><td class="align_center">|Ct| (m2/N)</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">PMMA</td><td class="align_center">1145</td><td class="align_center">2190</td><td class="align_center">1200</td><td class="align_center">3.595</td><td class="align_center">0.32</td><td class="align_center">0.084</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Dynamic optical constants of the model material.</div>

Shock and Vibration

tab1

Table 1

Table 1: Study of the Growth Process of Original Crack in the Surrounding Rock of Tunnel under the Adjacent Explosive Load 