Experimental Study on Mechanical Properties and Energy Dissipation of Gas Coal under Dynamic and Static Loads

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Sample number</td><td class="align_center">Compressive strength (MPa)</td><td class="align_center">Total dissipated energy (J)</td><td class="align_center">Total dissipated energy density (J·m<sup>−3</sup>)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">J1-1</td><td class="align_center">13.4</td><td class="align_center">23.12</td><td class="align_center">117735.24</td></tr><tr><td class="align_left">J1-2</td><td class="align_center">18.1</td><td class="align_center">28.37</td><td class="align_center">144493.25</td></tr><tr><td class="align_left">J1-3</td><td class="align_center">15.6</td><td class="align_center">29.19</td><td class="align_center">148642.25</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Total dissipated energy of gas coal failure in static loading test.</div>

Advances in Civil Engineering

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Table 4

Table 4: Experimental Study on Mechanical Properties and Energy Dissipation of Gas Coal under Dynamic and Static Loads 