Dynamic Response and Time-Frequency Characteristic of Dangerous Rocks under the Combined Action of Rock Cavity Weathering and Earthquake

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr class="thead"><td class="align_left">Elastic modulus (GPa)</td><td class="align_center">Tensile strength of parallel bond (MPa)</td><td class="align_center">Bonding strength of parallel bond (MPa)</td><td class="align_center">Local damping</td><td class="align_center">Stiffness ratio</td><td class="align_center">Coefficient of friction</td><td class="align_center">Radius multiplier</td><td class="align_center">Normal stiffness (N·m<sup>−1</sup>)</td><td class="align_center">Tangential stiffness (N·m<sup>−1</sup>)</td></tr><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr><td class="align_left">8</td><td class="align_center">5</td><td class="align_center">5</td><td class="align_center">0.4</td><td class="align_center">2</td><td class="align_center">0.5</td><td class="align_center">1.00</td><td class="align_center">10</td><td class="align_center">1.0</td></tr><tr class="table-tr"><td colspan="9"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Mesoscopic parameters of sandstone joints.</div>

Advances in Civil Engineering

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Table 3

Table 3: Dynamic Response and Time-Frequency Characteristic of Dangerous Rocks under the Combined Action of Rock Cavity Weathering and Earthquake 