Vibration Signal Analysis of Water Seal Blasting Based on Wavelet Threshold Denoising and HHT Transformation

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Charge structure</td><td class="align_center">Peak vibration velocity (cm s<sup>−1</sup>)</td><td class="align_center">Surrounding rock grade</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Conventional charge structure</td><td class="align_center">3.52</td><td class="align_center" rowspan="4">IV</td></tr><tr><td class="align_left">Water interval charge at both ends</td><td class="align_center">4.14</td></tr><tr><td class="align_left">Water interval charge at the orifice</td><td class="align_center">3.71</td></tr><tr><td class="align_left">Water interval charge at the hole bottom</td><td class="align_center">3.19</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Peak vibration velocity of different charge structures.</div>

Advances in Civil Engineering

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Table 3

Table 3: Vibration Signal Analysis of Water Seal Blasting Based on Wavelet Threshold Denoising and HHT Transformation 