Study on Progressive Failure of Hard Rock Tunnel After Excavation Under High Stress

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">The stages of simulated excavation</td><td class="align_center">1</td><td class="align_center">2</td><td class="align_center">3</td><td class="align_center">4</td><td class="align_center">5</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Elastic modulus/GPa</td><td class="align_center">5</td><td class="align_center">3</td><td class="align_center">1</td><td class="align_center">0.5</td><td class="align_center">0.1</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Deformation modulus used in different stages.</div>

Advances in Civil Engineering

tab2

Table 2

Table 2: Study on Progressive Failure of Hard Rock Tunnel After Excavation Under High Stress 