Study on Catastrophe Information Characteristics of Water Inrush in Karst Tunnel by Drilling and Blasting Method

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td class="align_left">Material</td><td class="align_center">Unit weight</td><td class="align_center">Elastic bulk modulus</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Friction angle</td><td class="align_center">Cohesion (MPa)</td><td class="align_center">Normal stiffness</td><td class="align_center">Tangential stiffness</td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td class="align_left">Block</td><td class="align_center">24 kN/m<sup>3</sup></td><td class="align_center">30 GPa</td><td class="align_center">0.25</td><td class="align_center">35°</td><td class="align_center">0.8</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr><td class="align_left">Joint</td><td class="align_center">—</td><td class="align_center">—</td><td class="align_center">—</td><td class="align_center">33°</td><td class="align_center">0.5</td><td class="align_center">180 GPa/m</td><td class="align_center">144 GPa/m</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Block and joint mechanical parameters in numerical simulation [<a href="/journals/ace/2022/9228569/#B32" target="_blank">32</a>].</div>

Advances in Civil Engineering

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Table 1

Table 1: Study on Catastrophe Information Characteristics of Water Inrush in Karst Tunnel by Drilling and Blasting Method 