The Analysis of Time-Space Effect of Surrounding Rock Deformation of TBM Tunnels in Deep Composite Stratum with or without Support

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Sequence number</td><td class="align_center">Compressive strength (MPa)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Upper strata (100 : 2)</td><td class="align_center">0.18</td><td class="align_center">32</td><td class="align_center">0.29</td></tr><tr><td class="align_left">Lower strata (100 : 2.5)</td><td class="align_center">0.31</td><td class="align_center">35.8</td><td class="align_center">0.35</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Basic mechanical parameters of sand and paraffin mixed strata.</div>

Advances in Civil Engineering

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Table 3

Table 3: The Analysis of Time-Space Effect of Surrounding Rock Deformation of TBM Tunnels in Deep Composite Stratum with or without Support 