A Multistep Method for Automatic Determination and Optimization of Microseismic P-Phase Arrival Times in a Coal Mine

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Number</td><td class="align_center">Accuracy</td><td class="align_center">Calculating speed</td><td class="align_center">Remarks</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Manual pick</td><td class="align_center" rowspan="2">6.6 ms (average error)</td><td class="align_center">3 min</td><td class="align_center" rowspan="2">This contrast is limited to data of 12 channels</td></tr><tr><td class="align_left">Automatic pick</td><td class="align_center">0.039 s</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of picking methods in terms of speed and accuracy.</div>

Advances in Civil Engineering

tab6

Table 6

Table 6: A Multistep Method for Automatic Determination and Optimization of Microseismic P-Phase Arrival Times in a Coal Mine 