Stability Analysis of Neighborhood Tunnels with Large Section Constructed in Steeply Jointed Rock Mass

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Type of case</td><td class="align_center" colspan="3">Maximum of tensile force</td><td class="align_center" colspan="3">Maximum of compressive force</td></tr><tr class="thead"><td class="align_center">Value (kN)</td><td class="align_center">Safety factor</td><td class="align_center">Location near</td><td class="align_center">Value (kN)</td><td class="align_center">Safety factor</td><td class="align_center">Location near</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">With joint</td><td class="align_center">79.08</td><td class="align_center">1.46</td><td class="align_center">Left shoulder of left tunnel</td><td class="align_center">−49.97</td><td class="align_center">2.31</td><td class="align_center">Left side wall of right tunnel</td></tr><tr><td class="align_left">No joint</td><td class="align_center">29.11</td><td class="align_center">3.96</td><td class="align_center">Crown of right</td><td class="align_center">−15.54</td><td class="align_center">7.42</td><td class="align_center">Right foot of left tunnel</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>Safety factor is equal to the ratio between strength and force of rock anchor.<br/></div></td></tr></table>

<div>Maximums comparison of rock anchor.</div>

Mathematical Problems in Engineering

tab7

Table 7

Table 7: Stability Analysis of Neighborhood Tunnels with Large Section Constructed in Steeply Jointed Rock Mass 