The Law of Fracture Evolution of Overlying Strata and Gas Emission in Goaf under the Influence of Mining

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/2752582/figures/2752582.fig.006a.svgz" name="2752582.fig.006a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Borehole No. I</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/2752582/figures/2752582.fig.006b.svgz" name="2752582.fig.006b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Borehole No. II</td></tr></table>

<div>Observation results of drill holes during mining.</div>

Geofluids

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Figure 6

Figure 6: The Law of Fracture Evolution of Overlying Strata and Gas Emission in Goaf under the Influence of Mining 