Dynamic Monitoring and Research on the Evolution of the Damage of Weakly Consolidated Coal Floor under Dynamic Pressure Using Distributed Optical Fiber

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Loading time (s)</td><td class="align_center">Axial pressure (kN)</td><td class="align_center">Degree of rock sample damage</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">0 ~ 214</td><td class="align_center">141.9</td><td class="align_center">Initial pore compression and linear elasticity stages</td></tr><tr><td class="align_left">214~279</td><td class="align_center">98.8 ~ 134.4</td><td class="align_center">Local fissures</td></tr><tr><td class="align_left">&gt;279</td><td class="align_center">&lt;134.4</td><td class="align_center">Completely destroyed</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Loading process of the rock samples.</div>

Geofluids

tab1

Table 1

Table 1: Dynamic Monitoring and Research on the Evolution of the Damage of Weakly Consolidated Coal Floor under Dynamic Pressure Using Distributed Optical Fiber 

Table 1 | Dynamic Monitoring and Research on the Evolution of the Damage of Weakly Consolidated Coal Floor under Dynamic Pressure Using Distributed Optical Fiber 