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.006a.svgz" name="1025276.fig.006a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(a) SG-A-ND frequency domain</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.006b.svgz" name="1025276.fig.006b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(b) SG-A-DE frequency domain</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.006c.svgz" name="1025276.fig.006c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(c) SG-B-ND frequency domain</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.006d.svgz" name="1025276.fig.006d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(d) SG-B-DE frequency domain</td></tr><tr class="fig-image" id="e"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.006e.svgz" name="1025276.fig.006e" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(e) SG-C-ND frequency domain</td></tr><tr class="fig-image" id="f"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/1025276/figures/1025276.fig.006f.svgz" name="1025276.fig.006f" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td>(f) SG-C-DE frequency domain</td></tr></table>

Shock and Vibration

fig6

Figure 6

Figure 6: Experimental Research and Numerical Simulation on Grouting Quality of Shield Tunnel Based on Impact Echo Method 