Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Minimum particle diameter/mm</td><td class="align_center">0.3</td></tr><tr><td class="align_left">Particle diameter ratio</td><td class="align_center">1.66</td></tr><tr><td class="align_left">Density/(kg/m<sup>3</sup>)</td><td class="align_center">1800</td></tr><tr><td class="align_left">Contact modulus of the particle/GPa</td><td class="align_center">1.0</td></tr><tr><td class="align_left">Parallel bond deformation modulus/GPa</td><td class="align_center">12</td></tr><tr><td class="align_left">Porosity</td><td class="align_center">0.1</td></tr><tr><td class="align_left">Coefficient of friction</td><td class="align_center">0.46</td></tr><tr><td class="align_left">Parallel bond compressive strength/MPa</td><td class="align_center">10</td></tr><tr><td class="align_left">Parallel bond cohesive force/MPa</td><td class="align_center">16</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Physicomechanical parameters of coal-rock specimen.

Advances in Materials Science and Engineering

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Table 1

Table 1: Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution 