The Influence of Heading Rate on Roof Stability in Coal Entry Excavation

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">No.</td><td class="align_center">Confining pressure (MPa)</td><td class="align_center">Peak strength (MPa)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">0</td><td class="align_center">22.99</td></tr><tr><td class="align_left">2</td><td class="align_center">10</td><td class="align_center">61.65</td></tr><tr><td class="align_left">3</td><td class="align_center">20</td><td class="align_center">87.03</td></tr><tr><td class="align_left">4</td><td class="align_center">30</td><td class="align_center">113.14</td></tr><tr><td class="align_left">5</td><td class="align_center">40</td><td class="align_center">135.66</td></tr><tr><td class="align_left">6</td><td class="align_center">50</td><td class="align_center">156.41</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Results of conventional triaxial tests from Reference [<a href="/journals/ace/2018/9841374/#B33" target="_blank">33</a>].</div>

Advances in Civil Engineering

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Table 2

Table 2: The Influence of Heading Rate on Roof Stability in Coal Entry Excavation 