Investigation on Failure Characteristics of Coal Seam Floor in Paste Filling Working Face

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/1808571/figures/1808571.fig.008a.svgz" name="1808571.fig.008a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Filling body strength 3 MPa</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/1808571/figures/1808571.fig.008b.svgz" name="1808571.fig.008b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Filling body strength 4 MPa</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/1808571/figures/1808571.fig.008c.svgz" name="1808571.fig.008c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Filling body strength 5 MPa</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/1808571/figures/1808571.fig.008d.svgz" name="1808571.fig.008d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Filling body strength 7 MPa</td></tr></table>

<div>Vertical stress distribution around the working face with different backfill strengths.</div>

Geofluids

fig8

Figure 8

Figure 8: Investigation on Failure Characteristics of Coal Seam Floor in Paste Filling Working Face 