The Study on Large-Diameter Drilling Prevention Method of Rock Burst in the Xinxing Coal

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015a.svgz" name="6640295.fig.0015a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>No boreholes</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015b.svgz" name="6640295.fig.0015b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Borehole diameter 200 mm</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015c.svgz" name="6640295.fig.0015c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Borehole diameter 400 mm</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015d.svgz" name="6640295.fig.0015d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Borehole diameter 600 mm</td></tr><tr class="fig-image" id="e"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015e.svgz" name="6640295.fig.0015e" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(e) </b>Borehole diameter 800 mm</td></tr><tr class="fig-image" id="f"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.0015f.svgz" name="6640295.fig.0015f" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(f) </b>Borehole diameter 1000 mm</td></tr></table>

<div>Distribution of plastic zone under different apertures.</div>

Geofluids

fig15

Figure 15

Figure 15: The Study on Large-Diameter Drilling Prevention Method of Rock Burst in the Xinxing Coal 