The Influence Mechanism of In Situ Stress State on the Stability of Deep-Buried-Curved Tunnel in Qinghai-Tibet Plateau and Its Adjacent Region

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Surrounding rock of grade II</td><td class="align_center">Density (<i>ρ</i>) (g/m<sup>3</sup>)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio (<i>μ</i>)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Prototype</td><td class="align_center">&gt;2.65</td><td class="align_center">16–33</td><td class="align_center">0.2–0.25</td></tr><tr><td class="align_left">Model</td><td class="align_center">2.72</td><td class="align_center">16</td><td class="align_center">0.25</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mechanical parameters of surrounding rock of grade II.</div>

Shock and Vibration

tab1

Table 1

Table 1: The Influence Mechanism of In Situ Stress State on the Stability of Deep-Buried-Curved Tunnel in Qinghai-Tibet Plateau and Its Adjacent Region 

Table 1 | The Influence Mechanism of In Situ Stress State on the Stability of Deep-Buried-Curved Tunnel in Qinghai-Tibet Plateau and Its Adjacent Region 