Research on Pressure Relief Method of Close Floor Roadway in Coal Seam Based on Deformation and Failure Characteristics of Surrounding Rock in Deep Roadway

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/5820228/figures/5820228.fig.0011a.svgz" name="5820228.fig.0011a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Strain line 1</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/5820228/figures/5820228.fig.0011b.svgz" name="5820228.fig.0011b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Strain line 3</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/5820228/figures/5820228.fig.0011c.svgz" name="5820228.fig.0011c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Strain line 5</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/5820228/figures/5820228.fig.0011d.svgz" name="5820228.fig.0011d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Strain line 8</td></tr></table>

<div>Strain curve chart of overlying strata in different loading phases after the floor roadway excavation.</div>

Geofluids

fig11

Figure 11

Figure 11: Research on Pressure Relief Method of Close Floor Roadway in Coal Seam Based on Deformation and Failure Characteristics of Surrounding Rock in Deep Roadway 

Figure 11 | Research on Pressure Relief Method of Close Floor Roadway in Coal Seam Based on Deformation and Failure Characteristics of Surrounding Rock in Deep Roadway 