Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:10.70em"/><col style="width:4.87em"/><col style="width:9.95em"/><col style="width:5.36em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Rock type</td><td class="align_center">Soft rock</td><td class="align_center">Moderately hard rock</td><td class="align_center">Hard rock</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Young’s modulus (GPa)</td><td class="align_center">18</td><td class="align_center">50</td><td class="align_center">80</td></tr><tr><td class="align_left">UCS (MPa)</td><td class="align_center">60</td><td class="align_center">100</td><td class="align_center">150</td></tr><tr><td class="align_left">BTS (MPa)</td><td class="align_center">4</td><td class="align_center">5</td><td class="align_center">6</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Parameters of three types of rock.</div>

Shock and Vibration

tab2

Table 2

Table 2: Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions 