Effect of Reduced <svg style="vertical-align:-4.67648pt;width:20.737499px;" id="M1" height="20.924999" version="1.1" viewBox="0 0 20.737499 20.924999" width="20.737499"  xmlns="http://www.w3.org/2000/svg">
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</svg> Zone on Time-Dependent Analysis of Tunnels

<table>Variation of the overstress ratio (OSR) with time above the tunnel's crown.</table>

Advances in Civil Engineering

fig12

Figure 12

Figure 12: Effect of Reduced <svg style="vertical-align:-4.67648pt;width:20.737499px;" id="M1" height="20.924999" version="1.1" viewBox="0 0 20.737499 20.924999" width="20.737499"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.925)">
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</svg> Zone on Time-Dependent Analysis of Tunnels 

Advances in Civil Engineering

Effect of Reduced 𝑘 0 Zone on Time-Dependent Analysis of Tunnels

Figure 12

Effect of Reduced Zone on Time-Dependent Analysis of Tunnels