Characteristics of Bituminous Coal Permeability Response to the Pore Pressure and Effective Shear Stress in the Huaibei Coalfield in China

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Coal samples</td><td class="align_center" colspan="4">Organic component (%)</td><td class="align_center" rowspan="2">R<sub>max</sub> (%)</td></tr><tr class="thead"><td class="align_center">Vitrinite</td><td class="align_center">Semivitrinite</td><td class="align_center">Inertinite</td><td class="align_center">Exinite</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">SA3</td><td class="align_center">66.93</td><td class="align_center">9.68</td><td class="align_center">14.53</td><td class="align_center">8.86</td><td class="align_center">0.82</td></tr><tr><td class="align_left">SA8</td><td class="align_center">72.96</td><td class="align_center">9.79</td><td class="align_center">12.06</td><td class="align_center">5.19</td><td class="align_center">0.95</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Maceral statistics of sampling coal seam [<a href="/journals/geofluids/2019/5489051/#B29" target="_blank">29</a>].</div>

Geofluids

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Table 1

Table 1: Characteristics of Bituminous Coal Permeability Response to the Pore Pressure and Effective Shear Stress in the Huaibei Coalfield in China 