Study on the Influence of Tectonic Stress on Stability of Horseshoe-Shaped Tunnels

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">Vertical stress <i>P</i> (MPa)</td><td class="align_center">Horizontal stress <i>Q</i> (MPa)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">A1</td><td class="align_center">10.0</td><td class="align_center">20.0</td></tr><tr><td class="align_left">A2</td><td class="align_center">20.0</td><td class="align_center">40.0</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Parameters of the calculation model.</div>

Advances in Materials Science and Engineering

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Table 3

Table 3: Study on the Influence of Tectonic Stress on Stability of Horseshoe-Shaped Tunnels 