Mining-Induced Redistribution of the Abnormal Stress under the Close Bearing Coal Pillar for Entry Design

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Density (kg/m<sup>3</sup>)</td><td class="align_center">Bulk modulus (GPa)</td><td class="align_center">Shear modulus (GPa)</td><td class="align_center">Friction angle (°)</td><td class="align_center">Dilation angle (°)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">1200</td><td class="align_center">5.56</td><td class="align_center">2.27</td><td class="align_center">8.96</td><td class="align_center">6.28</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Basic properties of the gob material.</div>

Advances in Civil Engineering

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Table 4

Table 4: Mining-Induced Redistribution of the Abnormal Stress under the Close Bearing Coal Pillar for Entry Design 