Effect of Shaft Pillar Extraction on Stability of Main Shaft: A Case Study at Xincheng Gold Mine, China

<table class="fixed-width table-group" id="tab3"><tr><td><table class="table"><colgroup><col style="width:10.11em"/><col style="width:6.89em"/><col style="width:9.84em"/><col style="width:10.73em"/><col style="width:7.32em"/><col style="width:7.22em"/></colgroup><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Young’s modulus/GPa</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Tensile strength/MPa</td><td class="align_center">Internal friction angle/°</td><td class="align_center">Cohesion/MPa</td><td class="align_center">Density/kg/m<sup>3</sup></td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">26</td><td class="align_center">0.21</td><td class="align_center">3.34</td><td class="align_center">46.33</td><td class="align_center">8.33</td><td class="align_center">2650</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mechanical parameters of the numerical orthogonal experimental.</div>

Mathematical Problems in Engineering

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Table 3

Table 3: Effect of Shaft Pillar Extraction on Stability of Main Shaft: A Case Study at Xincheng Gold Mine, China 