Mechanism of Loading Fracture of Coal Mass and Formation of Oil and Gas Disaster Channel in Coal and Oil Resources Costorage Area

<table class="table-group" id="tab2"><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">C<sub>1</sub></td><td class="align_center">C<sub>2</sub></td><td class="align_center">C<sub>3</sub></td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Compressive strength/MPa</td><td class="align_center">16.59</td><td class="align_center">23.46</td><td class="align_center">26.72</td></tr><tr><td class="align_left">Accumulated energy/kV·ms</td><td class="align_center">5.21</td><td class="align_center">8.41</td><td class="align_center">11.065</td></tr><tr><td class="align_left">Number of AEs at complete rupture/Pcs</td><td class="align_center">51405</td><td class="align_center">70852</td><td class="align_center">90395</td></tr><tr><td class="align_left">Characteristic energy at peak/V·ms<sup>−1</sup></td><td class="align_center">1875.65</td><td class="align_center">1949.27</td><td class="align_center">2597.93</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Compressive strength and acoustic emission energy of different specimens.</div>

Shock and Vibration

tab2

Table 2

Table 2: Mechanism of Loading Fracture of Coal Mass and Formation of Oil and Gas Disaster Channel in Coal and Oil Resources Costorage Area 