Research on Coupling Degree Model of Safety Risk System for Tunnel Construction in Subway Shield Zone

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">The 1st-level indicators</td><td class="align_center"><i>E</i><sub><i>x</i></sub></td><td class="align_center"><i>E</i><sub><i>n</i></sub></td><td class="align_center"><i>H</i><sub><i>e</i></sub></td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Human risk factors R1</td><td class="align_center">0.4008</td><td class="align_center">0.1421</td><td class="align_center">0.0292</td></tr><tr><td class="align_left">Machinery risk factors R2</td><td class="align_center">0.4174</td><td class="align_center">0.1498</td><td class="align_center">0.0240</td></tr><tr><td class="align_left">Environmental risk factors R3</td><td class="align_center">0.4629</td><td class="align_center">0.1289</td><td class="align_center">0.0185</td></tr><tr><td class="align_left">Management risk factors R4</td><td class="align_center">0.4097</td><td class="align_center">0.1403</td><td class="align_center">0.0226</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The digital characteristics of the 1st-level indicators.</div>

Mathematical Problems in Engineering

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Table 8

Table 8: Research on Coupling Degree Model of Safety Risk System for Tunnel Construction in Subway Shield Zone 