Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Bulk modulus (GPa)</td><td class="align_center">Shear modulus of elasticity (GPa)</td><td class="align_center">Density kg/m<sup>−3</sup></td><td class="align_center">The angle of internal friction (°)</td><td class="align_center">Dilatancy angle (°)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">5.53</td><td class="align_center">4.62</td><td class="align_center">1800</td><td class="align_center">20</td><td class="align_center">7</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Material mechanics parameters for caved rock.</div>

Advances in Civil Engineering

tab3

Table 3

Table 3: Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway 