Theoretical Study on Internal Forces of Primary Support of Tunnel by considering Time Effect

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Primary support thickness <i>h</i> (cm)</td><td class="align_center">20</td></tr><tr><td class="align_left">Cross-section area <i>A</i> (cm<sup>2</sup>)</td><td class="align_center">2000</td></tr><tr><td class="align_left">Elastic resistance coefficient of surrounding rock <i>K</i>(MPa/m)</td><td class="align_center">480</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

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Table 2

Table 2: Theoretical Study on Internal Forces of Primary Support of Tunnel by considering Time Effect 