Simulation and Experimental Study on the Discontinuous Dynamic Impact on Unidirectional Confined Coal-Rock Damage

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Sampling period/<i>μ</i>s</td><td class="align_center">Emission voltage/V</td><td class="align_center">Measuring point spacing/mm</td><td class="align_center">Testing surface</td><td class="align_center">Testing method</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">0.5</td><td class="align_center">500</td><td class="align_center">70</td><td class="align_center">Surface</td><td class="align_center">Relative measuring method</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Setting of system parameters of ultrasonic devices.</div>

Shock and Vibration

tab3

Table 3

Table 3: Simulation and Experimental Study on the Discontinuous Dynamic Impact on Unidirectional Confined Coal-Rock Damage 