A Study on the Mechanisms of Tension-Shear Failure and the Estimation Model for Key Parameters of Free-Face-Assisted Rock Breaking

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Penetration (mm)</td><td class="align_center">3</td><td class="align_center">6</td><td class="align_center">9</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">The test value (mm)</td><td class="align_center">30</td><td class="align_center">75</td><td class="align_center">100</td></tr><tr><td class="align_left">The model value (mm)</td><td class="align_center">24.56</td><td class="align_center">69.21</td><td class="align_center">126.71</td></tr><tr><td class="align_left">Error (mm)</td><td class="align_center">−5.44</td><td class="align_center">−5.79</td><td class="align_center">26.71</td></tr><tr><td class="align_left">Error range</td><td class="align_center">−18%</td><td class="align_center">−8%</td><td class="align_center">+27%</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

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Advances in Civil Engineering

tab2

Table 2

Table 2: A Study on the Mechanisms of Tension-Shear Failure and the Estimation Model for Key Parameters of Free-Face-Assisted Rock Breaking 