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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td class="align_left">Overburden load p0 (MPa)</td><td class="align_center">Support load p2 (MPa)</td><td class="align_center">Peak load p3′ (MPa)</td><td class="align_center">The bulk density γm (kN/m3)</td><td class="align_center">Thickness hm (m)</td><td class="align_center">The length L2 (m)</td><td class="align_center">The length L3 (m)</td><td class="align_center">Elastic modulus E (GPa)</td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td class="align_left">1.193</td><td class="align_center">0.0235</td><td class="align_center">4.7</td><td class="align_center">22.4</td><td class="align_center">4.15</td><td class="align_center">3.0</td><td class="align_center">0.67</td><td class="align_center">16.5</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculation parameters of the maximum unsupported roof distance of 30304 tailgate.</div>

Advances in Civil Engineering

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Table 4

Table 4: Study of the Roof Deformation Characteristics of Roadway Excavation Face and Unsupported Roof Distance 