Study on the Porosity of Saturated Fragmentized Coals during Creep Process and Constitutive Relation

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter grain size</td><td class="align_center">m1</td><td class="align_center">m2</td><td class="align_center">m3</td><td class="align_center">m4</td><td class="align_center">m5</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">A</td><td class="align_center">−0.0123</td><td class="align_center">−0.02073</td><td class="align_center">−0.01528</td><td class="align_center">−0.0397</td><td class="align_center">−0.01618</td></tr><tr><td class="align_left">B</td><td class="align_center">5.48016</td><td class="align_center">10.01032</td><td class="align_center">9.60959</td><td class="align_center">10.76907</td><td class="align_center">9.20648</td></tr><tr><td class="align_left">C</td><td class="align_center">0.45403</td><td class="align_center">0.38592</td><td class="align_center">0.35751</td><td class="align_center">0.33906</td><td class="align_center">0.21664</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Fitting parameter table of the first index decay of fragmentized coals with different grain sizes under the stress of 12 MPa.</div>

Advances in Civil Engineering

tab4

Table 4

Table 4: Study on the Porosity of Saturated Fragmentized Coals during Creep Process and Constitutive Relation 