Study of the Roof Deformation Characteristics of Roadway Excavation Face and Unsupported Roof Distance

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Roadway width <i>a</i> (m)</td><td class="align_center">Thickness of separated rock mass <i>h</i> (m)</td><td class="align_center">Tensile strength <i>σ</i><sub>t</sub> (MPa)</td><td class="align_center">Uniformly distributed load <i>q</i> (MPa)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">4.6</td><td class="align_center">0.87</td><td class="align_center">3.67</td><td class="align_center">0.191</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculation parameters of the maximum unsupported roof distance of the plate model.</div>

Advances in Civil Engineering

tab1

Table 1

Table 1: Study of the Roof Deformation Characteristics of Roadway Excavation Face and Unsupported Roof Distance 