A New Mining Scheme for Hanging-Wall Ore-Body during the Transition from Open Pit to Underground Mining: A Numerical Study

<table class="table-group" id="tab3"><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">Density</td><td class="align_center">4150 kg/m<sup>3</sup></td></tr><tr><td class="align_left">Young’s modulus</td><td class="align_center">25 Gpa</td></tr><tr><td class="align_left">Poisson’s ratio</td><td class="align_center">0.27</td></tr><tr><td class="align_left">Joint cohesion (before/after failure)</td><td class="align_center">0.18 MPa/0 MPa</td></tr><tr><td class="align_left">Joint tensile strength (before/after failure)</td><td class="align_center">0.1 MPa/0 MPa</td></tr><tr><td class="align_left">Joint friction angle (before/after failure)</td><td class="align_center">32°/25°</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Physical parameters of the ore-body.</div>

Advances in Civil Engineering

tab3

Table 3

Table 3: A New Mining Scheme for Hanging-Wall Ore-Body during the Transition from Open Pit to Underground Mining: A Numerical Study 