Investigation on Pore-Fracture of Coal and Its Influence Mechanism on Tensile Failure Behavior of Coals with Bursting Proneness

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Number of the samples</td><td class="align_center">External load (N)</td><td class="align_center">Stress at the detection point (MPa)</td><td class="align_center">Strain at the detection point</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">H6</td><td class="align_center">480</td><td class="align_center">1.90</td><td class="align_center">0.031%</td></tr><tr><td class="align_left">H8</td><td class="align_center">450</td><td class="align_center">1.76</td><td class="align_center">0.025%</td></tr><tr><td class="align_left">N6</td><td class="align_center">320</td><td class="align_center">1.37</td><td class="align_center">0.042%</td></tr><tr><td class="align_left">N8</td><td class="align_center">300</td><td class="align_center">1.29</td><td class="align_center">0.033%</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Results of numerical simulation.</div>

Geofluids

tab7

Table 7

Table 7: Investigation on Pore-Fracture of Coal and Its Influence Mechanism on Tensile Failure Behavior of Coals with Bursting Proneness 