Critical Conditions and Energy Transfer Characteristics of the Failure Process of Coal-Rock Combination Systems in Deep Mines

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6655443/figures/6655443.fig.0012a.svgz" name="6655443.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Coarse sandstone-coal A11</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6655443/figures/6655443.fig.0012b.svgz" name="6655443.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Fine sandstone-coal A21</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6655443/figures/6655443.fig.0012c.svgz" name="6655443.fig.0012c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Siltstone-coal A31</td></tr></table>

<div>The particle size statistics of the crushed coal samples after the failure of the different lithology combination structures.</div>

Geofluids

fig12

Figure 12

Figure 12: Critical Conditions and Energy Transfer Characteristics of the Failure Process of Coal-Rock Combination Systems in Deep Mines 