Study on Fracture and Permeability Characteristics of Unloading Rock with High Water Pressure

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_center">Model</td><td class="align_center">Confining pressure <i>p</i><sub>2</sub> (MPa)</td><td class="align_center">Upper water pressure <i>p</i><sub>3</sub> (MPa)</td><td class="align_center">Lower water pressure <i>p</i><sub>4</sub> (MPa)</td><td class="align_center">Water pressure difference Δ<i>p</i> (MPa)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center" rowspan="3">15</td><td class="align_center" rowspan="3">4</td><td class="align_center">6</td><td class="align_center">2</td></tr><tr><td class="align_left">2</td><td class="align_center">8</td><td class="align_center">4</td></tr><tr><td class="align_left">3</td><td class="align_center">10</td><td class="align_center">6</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Numerical simulation scheme of different water pressures.</div>

Mathematical Problems in Engineering

tab2

Table 2

Table 2: Study on Fracture and Permeability Characteristics of Unloading Rock with High Water Pressure 