Mechanical and Deformation Characteristics and Optimization of Support Parameters for Superlarge-Span Tunnel: A Case Study from Laohushan Tunnel

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Rock mass</td><td class="align_center">Deformation modulus E (GPa)</td><td class="align_center">Poisson ratio <i>µ</i></td><td class="align_center">Internal friction angle <i>f</i> (°)</td><td class="align_center">Cohesion C (MPa)</td><td class="align_center">Rock mass gravity (kN/m<sup>3</sup>)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">IV</td><td class="align_center">8</td><td class="align_center">0.32</td><td class="align_center">30</td><td class="align_center">1.3</td><td class="align_center">20</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Physical and mechanical parameters of surrounding rock.</div>

Advances in Civil Engineering

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Table 5

Table 5: Mechanical and Deformation Characteristics and Optimization of Support Parameters for Superlarge-Span Tunnel: A Case Study from Laohushan Tunnel 

Table 5 | Mechanical and Deformation Characteristics and Optimization of Support Parameters for Superlarge-Span Tunnel: A Case Study from Laohushan Tunnel 