Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

<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">Soil layer</td><td class="align_center">Permeability coefficient (cm·s<sup>−1</sup>)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Clay</td><td class="align_center">2.0<i>e</i> − 7</td></tr><tr><td class="align_left">Silt</td><td class="align_center">2.9<i>e</i> − 3</td></tr><tr><td class="align_left">Silty sand</td><td class="align_center">2.9<i>e</i> − 3</td></tr><tr><td class="align_left">Clay</td><td class="align_center">2.0<i>e</i> − 7</td></tr><tr><td class="align_left">Silty clay</td><td class="align_center">6.0<i>e</i> − 7</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

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Table 2

Table 2: Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation 