Experimental Investigation on Hard Rock Breaking with Fiber Laser: Surface Failure Characteristics and Perforating Mechanism

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Density (g/cm<sup>3</sup>)</td><td class="align_center">Heat conductivity (W/Mk)</td><td class="align_center">Compressive strength (MPa)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Basalt</td><td class="align_center">2.61</td><td class="align_center">1.62</td><td class="align_center">206.71</td></tr><tr><td class="align_left">Sandstone</td><td class="align_center">2.34</td><td class="align_center">3.24</td><td class="align_center">143.08</td></tr><tr><td class="align_left">Granite</td><td class="align_center">2.44</td><td class="align_center">2.51</td><td class="align_center">94.22</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mechanical and thermal properties of rock samples.</div>

Advances in Civil Engineering

tab1

Table 1

Table 1: Experimental Investigation on Hard Rock Breaking with Fiber Laser: Surface Failure Characteristics and Perforating Mechanism 