Comprehensive Analysis of Stability of Coal Seam Composite Roof Based on Analytic Hierarchy Process

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Layer number</td><td class="align_center">One layer</td><td class="align_center">Two layers</td><td class="align_center">Three layers</td><td class="align_center">Four layers or more</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left"><i>B</i><sub><i>i</i></sub></td><td class="align_center">1.00</td><td class="align_center">0.67</td><td class="align_center">0.53</td><td class="align_center">0.47</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Influence coefficient <i>B</i><sub><i>i</i></sub> of the number of strata.</div>

Advances in Civil Engineering

tab3

Table 3

Table 3: Comprehensive Analysis of Stability of Coal Seam Composite Roof Based on Analytic Hierarchy Process 