Influence of Support Parameter and Excavation Methods on Statistical Distribution Characteristics of Surrounding Rock Pressure in Shallow-Buried Metro Tunnel

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Rock mass type</td><td class="align_center" rowspan="2">Group number</td><td class="align_center" colspan="2">Trace length (m)</td><td class="align_center" colspan="2">Dip angle (°)</td><td class="align_center" rowspan="2">Density (strip/m<sup>2</sup>)</td></tr><tr class="thead"><td class="align_center">Mean</td><td class="align_center">Variance</td><td class="align_center">Mean</td><td class="align_center">Variance</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Soft rock</td><td class="align_center">1</td><td class="align_center">5</td><td class="align_center">0.25</td><td class="align_center">30</td><td class="align_center">4</td><td class="align_center">0.05</td></tr><tr><td class="align_left">Hard rock</td><td class="align_center">1</td><td class="align_center">5</td><td class="align_center">0.25</td><td class="align_center">120</td><td class="align_center">4</td><td class="align_center">0.01</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Characteristics of joint distribution parameters.</div>

Advances in Civil Engineering

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Table 1

Table 1: Influence of Support Parameter and Excavation Methods on Statistical Distribution Characteristics of Surrounding Rock Pressure in Shallow-Buried Metro Tunnel 

Table 1 | Influence of Support Parameter and Excavation Methods on Statistical Distribution Characteristics of Surrounding Rock Pressure in Shallow-Buried Metro Tunnel 