Experimental Research and Numerical Simulation on Grouting Quality of Shield Tunnel Based on Impact Echo Method

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.007a.svgz" name="1025276.fig.007a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Without defect SG-A-ND</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.007b.svgz" name="1025276.fig.007b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>With defect SG-A-DE</td></tr></table>

Shock and Vibration

fig7

Figure 7

Figure 7: Experimental Research and Numerical Simulation on Grouting Quality of Shield Tunnel Based on Impact Echo Method 