Research on the Reasonable Strengthening Time and Stability of Excavation Unloading Surrounding Rock of High-Stress Rock Mass

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/3508661/figures/3508661.fig.0010a.svgz" name="3508661.fig.0010a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Displacement curve for surrounding rock in deep roadway roof</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/3508661/figures/3508661.fig.0010b.svgz" name="3508661.fig.0010b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Changing curve for the convergence rate of surrounding rock in deep roadway roof</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/3508661/figures/3508661.fig.0010c.svgz" name="3508661.fig.0010c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Displacement curve of surrounding rock deep on the right side of the roadway</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/3508661/figures/3508661.fig.0010d.svgz" name="3508661.fig.0010d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Change curve of the convergence rate of surrounding rock deep on the right side of the roadway</td></tr></table>

<div>Corresponding curves for the number of time steps and surrounding rock deformation of the roadway.</div>

Geofluids

fig10

Figure 10

Figure 10: Research on the Reasonable Strengthening Time and Stability of Excavation Unloading Surrounding Rock of High-Stress Rock Mass 