Analytical Solution of a Circular Opening considering Nonuniform Pressure and Its Engineering Application

<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_left">Lateral pressure coefficient</td><td class="align_center">0° side (MPa)</td><td class="align_center">30° spandrel (MPa)</td><td class="align_center">60° spandrel (MPa)</td><td class="align_center">90° roof (MPa)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left"><i>λ</i> = 0.8</td><td class="align_center">0.243</td><td class="align_center">0.200</td><td class="align_center">0.115</td><td class="align_center">0.072</td></tr><tr><td class="align_left"><i>λ</i> = 1.5</td><td class="align_center">0.094</td><td class="align_center">0.200</td><td class="align_center">0.414</td><td class="align_center">0.520</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The changes of critical support resistance (<i>p</i><sub><i>yc</i></sub>) when the surrounding rock changes from elastic to plastic state.</div>

Advances in Civil Engineering

tab2

Table 2

Table 2: Analytical Solution of a Circular Opening considering Nonuniform Pressure and Its Engineering Application 