Study on Stability Control of Retained Gob-Side Entry by Blasting Fracturing Roof Technology in Thick Immediate Roof

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">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 (°)</td><td class="align_center">Dilation (°)</td><td class="align_center">Tensile (GPa)</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Value</td><td class="align_center">1000</td><td class="align_center">8.1</td><td class="align_center">5.97</td><td class="align_center">20</td><td class="align_center">6</td><td class="align_center">0</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Material parameters of gangue in gob.</div>

Shock and Vibration

tab6

Table 6

Table 6: Study on Stability Control of Retained Gob-Side Entry by Blasting Fracturing Roof Technology in Thick Immediate Roof 