Study on Hydraulic Connection and Seepage Law of Goaf Groups in Coal Mine Underground Reservoir

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/4316878/figures/4316878.fig.003a.svgz" name="4316878.fig.003a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Loading stage</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/4316878/figures/4316878.fig.003b.svgz" name="4316878.fig.003b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Unloading stage</td></tr></table>

<div>Curves of permeability and axial pressure. (a) Loading stage. (b) Unloading stage.</div>

Geofluids

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Figure 3

Figure 3: Study on Hydraulic Connection and Seepage Law of Goaf Groups in Coal Mine Underground Reservoir 