Prediction Model of Drilling Performance for Percussive Rock Drilling Tool

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Description</td><td class="align_center">Impact frequency (Hz)</td><td class="align_center">Impact power (kW)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Soft rock<br/>Medium-hard rock<br/>Hard rock</td><td class="align_center">23<br/>30<br/>32</td><td class="align_center">8.7<br/>11.2<br/>12.0</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Numerical simulation results of a DTH hammer according to rock type.</div>

Advances in Civil Engineering

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Table 1

Table 1: Prediction Model of Drilling Performance for Percussive Rock Drilling Tool 