Experimental Study on Characteristics of Seismic Damage and Damping Technology of Absorbing Joint of Tunnel Crossing Interface of Soft and Hard Rock

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Working conditions</td><td class="align_center">Experiment contents</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left"><i>A</i></td><td class="align_center">Homogeneous formation (hard rock), no absorbing joint</td></tr><tr><td class="align_left"><i>B</i></td><td class="align_center">Homogeneous formation (soft rock), no absorbing joint</td></tr><tr><td class="align_left"><i>C</i></td><td class="align_center">Interface of soft and hard rock, no absorbing joint</td></tr><tr><td class="align_left"><i>D</i></td><td class="align_center">Interface of soft and hard rock, only setting absorbing joint for second lining</td></tr><tr><td class="align_left"><i>E</i></td><td class="align_center">Interface of soft and hard rock, staggered absorbing joints of primary support and second lining (absorbing joint of second lining is set according to the optimal absorbing joint interval, the interval of primary support absorbing joint is 3 m, 6 m, 9 m and 12 m respectively)</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Experimental working conditions.</div>

Shock and Vibration

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Table 2

Table 2: Experimental Study on Characteristics of Seismic Damage and Damping Technology of Absorbing Joint of Tunnel Crossing Interface of Soft and Hard Rock 

Table 2 | Experimental Study on Characteristics of Seismic Damage and Damping Technology of Absorbing Joint of Tunnel Crossing Interface of Soft and Hard Rock 