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

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Shear stiffness (GPa/m)</td><td class="align_center">Normal stiffness (GPa/m)</td><td class="align_center">Friction angle (°)</td><td class="align_center">Cohesion (MPa)</td><td class="align_center">Tensile strength (MPa)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">2</td><td class="align_center">2</td><td class="align_center">4.75</td><td class="align_center">0.8</td><td class="align_center">0.25</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Structure plane properties used in the numerical model.</div>

Advances in Civil Engineering

tab5

Table 5

Table 5: Mining-Induced Redistribution of the Abnormal Stress under the Close Bearing Coal Pillar for Entry Design 