Study on Identification of Construction Method for Ultra-Large-Span Tunnel

<table class="table-group" id="tab11"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Description of tunnel stability</td><td class="align_center">Basically stable</td><td class="align_center">Very stable</td><td class="align_center">Highly stable</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Bench division</td><td class="align_center">Bench division is necessary and temporary invert should be adopted</td><td class="align_center">Bench division is necessary and temporary invert is not compulsive</td><td class="align_center">Bench division is unnecessary</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Stability index value and bench division of tunnel drift.</div>

Advances in Civil Engineering

tab11

Table 11

Table 11: Study on Identification of Construction Method for Ultra-Large-Span Tunnel 