Theoretical and Experimental Study of the Effects of Impact Drilling Parameters on the Properties of Surrounding Rock Damage

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Rock type</td><td class="align_center">Density (g/cm<sup>3</sup>)</td><td class="align_center">Uniaxial compressive strength (MPa)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Cohesion (MPa)</td><td class="align_center">Angle of internal friction (°)</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Granite</td><td class="align_center">2.79</td><td class="align_center">193.236</td><td class="align_center">58.92</td><td class="align_center">0.216</td><td class="align_center">30.5</td><td class="align_center">48.3°</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Test results of the physical and mechanical parameters of granite.</div>

Shock and Vibration

tab3

Table 3

Table 3: Theoretical and Experimental Study of the Effects of Impact Drilling Parameters on the Properties of Surrounding Rock Damage 