Experimental Study on the Application of BOTDA in the Overlying Strata Deformation Monitoring Induced by Coal Mining

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/js/volume-2019/3439723/figures/3439723.fig.009a.svgz" name="3439723.fig.009a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>The initial overburden structure</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/js/volume-2019/3439723/figures/3439723.fig.009b.svgz" name="3439723.fig.009b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The structure after face 1 mining</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/js/volume-2019/3439723/figures/3439723.fig.009c.svgz" name="3439723.fig.009c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>The structure after face 2 mining</td></tr></table>

<div>The picture of the model’s overlying strata structure.</div>

Journal of Sensors

fig9

Figure 9

Figure 9: Experimental Study on the Application of BOTDA in the Overlying Strata Deformation Monitoring Induced by Coal Mining 