A Control Approach of the Roof in No-Pillar Roadway Formed by Roof Cutting and Pressure Releasing

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/4303021/figures/4303021.fig.008a.svgz" name="4303021.fig.008a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Roof cutting 10 m</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/4303021/figures/4303021.fig.008b.svgz" name="4303021.fig.008b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Roof cutting 16 m</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/4303021/figures/4303021.fig.008c.svgz" name="4303021.fig.008c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Roof cutting 21 m</td></tr></table>

<div>Simulation test results of roof displacement.</div>

Geofluids

fig8

Figure 8

Figure 8: A Control Approach of the Roof in No-Pillar Roadway Formed by Roof Cutting and Pressure Releasing 