Research on Arch Model and Numerical Simulation of Critical Water and Sand Inrush in Coal Mine near Unconsolidated Layers

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2020/6644849/figures/6644849.fig.005a.svgz" name="6644849.fig.005a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Ratio of crack and sand being 4.8</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2020/6644849/figures/6644849.fig.005b.svgz" name="6644849.fig.005b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Ratio of crack and sand being 4.9</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2020/6644849/figures/6644849.fig.005c.svgz" name="6644849.fig.005c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Ratio of crack and sand being 6.0</td></tr></table>

<div>Simulation results of critical instability of interlocking arch.</div>

Geofluids

fig5

Figure 5

Figure 5: Research on Arch Model and Numerical Simulation of Critical Water and Sand Inrush in Coal Mine near Unconsolidated Layers 