A DOFS-Based Approach to Calculate the Height of Water-Flowing Fractured Zone in Overlying Strata under Mining

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter category</td><td class="align_center">Fiber diameter/mm</td><td class="align_center">Core diameter/mm</td><td class="align_center">Maximum breaking force/N</td><td class="align_center">Modulus of elasticity/GPa</td><td class="align_center">Coefficient of strain/MHz/<i>με</i></td><td class="align_center">Temperature coefficient/MHz/°C</td><td class="align_center">Strain measuring range/<i>με</i></td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td class="align_left">Value</td><td class="align_center">2.0</td><td class="align_center">0.9</td><td class="align_center">220</td><td class="align_center">0.2</td><td class="align_center">0.04998</td><td class="align_center">1.89</td><td class="align_center">-10000~20000</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mechanical properties and sensing performance of polyurethane sheath fiber sensor.</div>

Geofluids

tab3

Table 3

Table 3: A DOFS-Based Approach to Calculate the Height of Water-Flowing Fractured Zone in Overlying Strata under Mining 