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.009a.svgz" name="6640295.fig.009a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Distribution of plastic zones in large-diameter drill holes in front of the working face</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6640295/figures/6640295.fig.009b.svgz" name="6640295.fig.009b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The plastic zone distribution of the large-diameter borehole in the front after the working face advances</td></tr></table>

<div>Plastic zone changes in surrounding rock of large-diameter boreholes.</div>

Geofluids

fig9

Figure 9

Figure 9: The Study on Large-Diameter Drilling Prevention Method of Rock Burst in the Xinxing Coal 