Investigation on the Fracturing Permeability Characteristics of Cracked Specimens and the Formation Mechanism of Inrush Channel from Floor

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Elastic modulus</td><td class="align_center">50 GPa</td></tr><tr><td class="align_left">Internal friction angle</td><td class="align_center">30°</td></tr><tr><td class="align_left">Ratio of compression to tension</td><td class="align_center">10</td></tr><tr><td class="align_left">Compression coefficient</td><td class="align_center">2001</td></tr><tr><td class="align_left">Tension coefficient</td><td class="align_center">5</td></tr><tr><td class="align_left">Poisson’s ratio</td><td class="align_center">0.25</td></tr><tr><td class="align_left">Uniaxial compressive strength</td><td class="align_center">200 MPa</td></tr><tr><td class="align_left">Percentage of residual strength</td><td class="align_center">0.1</td></tr><tr><td class="align_left">Percentage of residual Poisson’s ratio</td><td class="align_center">1.1</td></tr><tr><td class="align_left">Homogeneity</td><td class="align_center">3</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Failure characteristic parameters used in the numerical model.</div>

Shock and Vibration

tab2

Table 2

Table 2: Investigation on the Fracturing Permeability Characteristics of Cracked Specimens and the Formation Mechanism of Inrush Channel from Floor 