Study on the Permeability Change Characteristic of Gas-Bearing Coal under Cyclic Loading and Unloading Path

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/5562628/figures/5562628.fig.008a.svgz" name="5562628.fig.008a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Load pass II</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/5562628/figures/5562628.fig.008b.svgz" name="5562628.fig.008b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Unload pass II</td></tr></table>

<div>Permeability regression curves of coal samples under II paths.</div>

Geofluids

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Figure 8

Figure 8: Study on the Permeability Change Characteristic of Gas-Bearing Coal under Cyclic Loading and Unloading Path 