Study on Deformation and Fracture Evolution of Underground Reservoir Coal Pillar Dam under Different Mining Conditions

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2022/2186698/figures/2186698.fig.005a.svgz" name="2186698.fig.005a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>When the working surface advances 20 m</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2022/2186698/figures/2186698.fig.005b.svgz" name="2186698.fig.005b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>When the working surface advances 80 m</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2022/2186698/figures/2186698.fig.005c.svgz" name="2186698.fig.005c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>When the working surface advances 180 m</td></tr></table>

<div>Deformation cloud diagram during mining.</div>

Geofluids

fig5

Figure 5

Figure 5: Study on Deformation and Fracture Evolution of Underground Reservoir Coal Pillar Dam under Different Mining Conditions 