Application of Distributed Optical Fiber Sensing Technology in Surrounding Rock Deformation Control of TBM-Excavated Coal Mine Roadway

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Rock category</td><td class="align_center">Density (g/cm<sup>3</sup>)</td><td class="align_center">UCS<sup>1</sup> (MPa)</td><td class="align_center">Tensile strength (MPa)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Limited tensile strain (<i>με</i>)</td><td class="align_center">Limited compress strain (<i>με</i>)</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Sandstone</td><td class="align_center">2.51</td><td class="align_center">28</td><td class="align_center">7.8</td><td class="align_center">42</td><td class="align_center">185.7</td><td class="align_center">666.7</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div><sup>1</sup>Uniaxial compressive strength.<br/></div></td></tr></table>

<div>Rock properties of roadway surrounding rocks.</div>

Journal of Sensors

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Table 1

Table 1: Application of Distributed Optical Fiber Sensing Technology in Surrounding Rock Deformation Control of TBM-Excavated Coal Mine Roadway 