An Experimental Research on Surrounding Rock Unloading during Solid Coal Roadway Excavation

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5604642/figures/5604642.fig.003a.svgz" name="5604642.fig.003a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Before stress balance of surrounding rock</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5604642/figures/5604642.fig.003b.svgz" name="5604642.fig.003b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>After stress balance of surrounding rock</td></tr></table>

<div>Stress distribution in the roadway surrounding rock.</div>

Geofluids

fig3

Figure 3

Figure 3: An Experimental Research on Surrounding Rock Unloading during Solid Coal Roadway Excavation 